Zhejiang Dongchen Valve Technology Co., Ltd. (formerly Hangzhou Dongchen thermal auxiliary equipment Co., Ltd.) was established in 2006 and is located in Hangzhou City, around 130 miles southwestern of Shanghai. It designs and manufactures special valves, various high and medium pressure regulating valves, Desuperheater, steam turbine bypass valves, boiler feed water regulating valves, minimum flow valves, gate valves, ball valves, butterfly valves, globe valves, check valves, blowdown valves and other valves, as well as relevant steam turbine auxiliary equipment and boiler auxiliary equipment. The products are used in coal-fired thermal power units of various capacity levels, gas turbine cogeneration projects, oil refining, chemical industry, metallurgy, central heating, and other fields.
To steadily improve the quality of products, Dongchen has adopted strict industry standards. All products must pass comprehensive quality testing to ensure that they fully meet customers' strict requirements. Zhejiang Dongchen Valve Technology Co., Ltd. has passed ISO9001 and ISO14001 & 45001 certifications to ensure product quality and minimize environmental and health impact.
In response to the call for the digital transformation of the national manufacturing industry, as an early declared smart IOT factory enterprise, Zhejiang Dongchen has built PLM, ERP, smart logistics, production equipment crystal ball, and smart IoT Kanban modules, realized integrated production, quality inspection and warehousing mode from order receiving to R & D and design, raw material procurement, production, and processing, opened a new digital production plant and office space of industrial valves and embarked on a new journey of Dongchen valves New manufacturing.
Control Links |
Points |
Head |
Control Categories |
Inspection Category |
Basis For Control |
Work Testimonials |
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Material Parts Control System |
1 purchase order |
1) Procurement document approval (material technical conditions, standards, etc.). |
Material Responsible Officer |
And |
Material and component control procedures |
Material purchase orders |
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2) Confirmation of qualified suppliers |
List of Qualified Suppliers |
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3) Purchase order |
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2 Accepted into the library |
1) Quality certificate review certificate, technical documents |
Material Responsible Officer |
H |
B |
Material and component control procedures |
Quality Certificate, |
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2) Supplement and re-examination, |
Buyer Inspector |
Certificate |
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3) Test report, audit, archive |
Recheck the report |
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4) Physical inspection. (Appearance quality, material marking, model, specifications). |
R |
Real |
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5) Material code preparation and marking transplantation |
R |
B |
Real |
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6) Material storage review |
R |
Shipping orders |
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3 Material storage |
1) Partition storage |
Class I welding consumables library warehouse manager, inspector |
And |
Material and component control procedures |
Partition tags |
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2) Physical marking and confirmation |
Physical markings |
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4 primary welding consumable library |
1) Batch number, quantity specifications |
Warehouse warehouse administrator |
And |
Welding control procedures |
Physical objects, material accounts |
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2) Stacking requirements |
Inspector |
Tags, records |
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3) Temperature and humidity control |
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5 Material substitutes |
1) Material substitution list approval 1 reasonableness 2 approval procedures |
Materials, process, welding quality engineer, design review |
R |
B |
Material substitution management specifications |
Material substitute list |
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6 Material distribution |
1) Physical review (specification, surface quality). |
Warehouse warehouse manager for responsibility |
R |
B |
Identification and traceability control procedures |
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2) Material code marking and mark transplantation |
Inspector |
R |
B |
Real |
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7Use of materials |
1) Material re-inspection |
Operator, inspector |
And |
Identification and traceability control procedures |
Real |
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2) Review before use |
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3) Label transplantation when unloading |
R |
B |
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8 Pressure element subcontracting |
1) Subcontractor evaluation |
Material Responsible Officer |
R |
Material and component control procedures |
Subcontracting protocols |
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2) Quality control of subcontracted projects |
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3) Subcontracted pressure components back to the company for inspection |
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Non-Destructive Testing Control System |
1 Accept the task |
Accept the delegate |
Client, inspector |
And |
Non-destructive testing control |
Delegate orders |
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2 Preparation before non-destructive testing |
1) Personnel qualifications |
Non-destructive responsible personnel |
R |
Non-destructive testing control |
Personnel training |
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2) Inspection instruments and equipment calibration regular inspection |
Non-destructive responsible personnel |
And |
Non-destructive testing control |
Certificate of authentication |
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3) Non-destructive testing process preparation |
Non-destructive responsible personnel |
And |
Non-destructive testing control |
Non-destructive process |
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4) Testing scheme |
Non-destructive responsible personnel |
And |
Non-destructive testing control |
Process solutions |
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5) Detect the status of the object |
Non-destructive responsible personnel |
And |
Non-destructive testing control |
Real |
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3 non-destructive testing implementation control links |
1) Preliminary investigation 1 Detection parameter 2 negative film quality |
Non-destructive responsible personnel, flaw detectors |
R |
B |
Non-destructive testing control |
Inspection records |
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2) Re-inspection and expansion control points, re-inspection results, expansion ratio |
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4 Reports are issued |
1) Preparation of reports |
Full-time flaw detector |
R |
B |
Non-destructive testing control |
report |
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2) Audit of reports |
Non-destructive responsible personnel |
R |
B |
Non-destructive testing control |
Detection report |
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5 subcontracts |
1) Subcontractor evaluation |
Non-destructive responsible personnel |
R |
Non-destructive testing control |
Evaluation form |
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2) Quality control of subcontracted projects |
Non-destructive responsible personnel |
R |
Non-destructive testing control |
agreement |
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3) Subcontract the project back to the company for data review |
Non-destructive responsible personnel |
R |
Non-destructive testing control |
agreement |
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Pressure Test Control System |
1 Pressure test preparation |
1) Pressure test process document preparation and review |
Person responsible for the test |
H |
A |
Pressure test control |
Test process card |
2) Pressure test equipment site |
Process Technology Department |
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3) Product integrity inspection, completion data inspection |
Person responsible for the test |
Pressure test control |
Physical, inspection records |
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2 Pressure test implementation |
1) Pressure gauge check 1 pressure gauge number 2 range 3 verification identification |
Person responsible for the test |
Metering control |
Verification records |
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2) Pressure test 1 test pressure 2 packing time |
Person responsible for the test |
Test control |
Test inspection records |
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3) The pressure test check has no leakage and no leakage, no obvious deformation of the tank, and no abnormal noise during the pressure test process |
Person responsible for the test |
Test control |
Test inspection records |
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3 after pressure test |
1) Pressure test report 1 original record 2 test report 3 supervision unit confirmation |
Person responsible for the test |
Pressure test control |
Trial report |
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Inspection Control System |
1 Inspection preparation control link |
1) Measuring instruments, gauge samples |
Measurement of responsible personnel |
And |
Inspection control |
Verify the identity |
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2) Inspection process |
Inspection technician |
And |
Inspection control |
Inspection process |
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3) Inspection and testing methods |
Inspector |
And |
Inspection control |
craft |
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2 Manufacturing process inspection (process inspection). |
1) Line the line of material |
Inspector of the person responsible for inspection |
H |
Inspection control |
Real |
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2) Scribble the holes |
Inspection control |
Real |
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3) Marker transplantation: identification of markers and transplant sites |
R |
B |
Inspection control |
Physical objects, marks |
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4) Longitudinal seam, ring seam welding welded joint surface quality |
R |
Identification and traceability control procedures |
Welding quality inspection records |
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5) Assemble weld arrangement, appearance geometry |
R |
Inspection control |
Recording |
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6 head shape deviation |
R |
B |
Inspection control |
Test board test record |
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7) Disposal of non-conforming products |
Inspection responsible personnel |
R |
Inspection control |
Appearance records |
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3 Inspection and testing data |
1) Product nameplate |
Inspection responsible personnel |
R |
Inspection control |
Make a steel stamp |
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2) Archive materials |
Inspection responsible personnel |
R |
Inspection control |
Quality records |
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3) Product safety and quality technical data |
Inspection responsible personnel |
R |
B |
Inspection control |
Product quality certificate |
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Physical And Chemical Inspection Control System |
1 Specimen verification |
1) Physical verification |
Physical and chemical responsible personnel |
And |
Physicochemical control |
sample |
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2) Acceptance of specimens, marking, quantity, dimensional accuracy |
Client, inspector |
And |
Physicochemical control |
sample |
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2 Test preparation |
1) Personnel qualifications |
Physical and chemical responsible personnel |
And |
Physicochemical control |
Training records |
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2) Regular inspection of instruments and equipment |
Measurement of responsible personnel |
And |
Physicochemical control |
Verification records |
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3) Method selection |
Physical and chemical responsible personnel |
And |
Physicochemical control |
Process specifications |
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3 test process |
1) Data Department: Rationalize the original data records and repeat the test regulations |
Physical and chemical responsible personnel |
R |
Physicochemical control |
Calculation results report |
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4 test reports |
1) Issuance of reports |
Physical and chemical responsible personnel |
R |
Physicochemical control |
Trial report |
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2) The qualified subcontractor submits the test report |
Physical and chemical responsible personnel |
R |
Physicochemical control |
Trial report |
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Metering Control System |
1 measurement management control link |
1) Leadership responsibilities |
Measurement of responsible personnel |
And |
Metering control |
Responsibility |
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2) Governing bodies |
Measurement of responsible personnel |
And |
Metering control |
Institutional organization |
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3) Metering management documents |
Measurement of responsible personnel |
And |
Metering control |
Record the file |
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4) Personnel quality |
Measurement of responsible personnel |
And |
Metering control |
Training records |
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5) Unit of measurement |
Measurement of responsible personnel |
And |
Metering control |
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2 measuring instruments equipped with measurement testing and control links |
1) Measuring instruments equipped |
Measurement of responsible personnel |
And |
Metering control |
Register the account |
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2) Measurement testing |
Measurement of responsible personnel |
And |
Metering control |
Real |
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3) Traceability of quantity and value |
Measurement of responsible personnel |
And |
Cycle verification |
Verification records |
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3 Metrology verification |
1) Maintenance and use of measuring instruments |
Full-time metrologian |
And |
Metering control |
Verification records |
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2) Measurement verification |
Full-time metrologian |
And |
Metering control |
Verification report |
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3) Logo management |
Measurement of responsible personnel |
And |
Metering control |
Verify the mark |
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4) Disposal of unqualified measuring instruments |
Measurement of responsible personnel |
And |
Metering control |
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4 Record file control links |
1) Metering records and archives |
Measurement responsible personnel, measuring personnel |
And |
File and record control |
Register of measuring instruments |
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5 Environmental condition control |
1) Metrology verification (calibration) and detection of environmental conditions |
Measurement of responsible personnel |
And |
Metering control |
Metrology room work system |
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Welding Control System |
1. Welder management |
1) Welder training |
Welding responsible personnel |
And |
Weld control |
Training records |
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2) Welder exam |
Welding responsible personnel |
And |
Weld control |
Welder profile |
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3) Certified management of welders |
Welding responsible personnel |
And |
Weld control |
Welder certificate, certified welder form |
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4) Welder performance appraisal and welder file management |
Welding responsible personnel |
And |
Weld control |
Welder profile |
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2. Welding equipment management |
1) Equipment resource conditions |
Equipment Responsible Personnel |
And |
Device control |
Device ledger |
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2) Procurement of welding equipment |
Equipment Responsible Personnel |
And |
Device control |
Procurement planning |
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3) The equipment is in good condition |
Equipment Responsible Personnel |
And |
Metering control |
Turnaround plan |
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4) Weekly inspection of welding instruments |
Measurement of responsible personnel |
And |
Metering control |
Verify the mark |
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3. Welding consumables management, grade II welding consumables library management |
1) Welding consumables procurement |
Material Responsible Officer |
H |
B |
Material and component control procedures |
Procurement planning |
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2) Welding consumables acceptance, welding consumables quality certificate |
Inspection responsible personnel |
Certificate of quality |
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3) Welding consumables re-inspection, welding consumables re-inspection report |
Inspection responsible personnel |
Recheck the report |
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4) Storage of welding consumables |
Level II solder library warehouse administrator |
And |
Weld control |
Field LEVEL II library |
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5) Drying of welding consumables |
Level II solder library warehouse administrator |
And |
Weld control |
Drying records |
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6) Constant temperature storage of welding consumables |
Level II solder library warehouse administrator |
And |
Weld control |
Solder consumables ledger |
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7) Welding consumables distribution and recycling |
Level II solder library warehouse administrator |
And |
Weld control |
Release recycling records |
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4. Welding process evaluation |
1) Welding performance test |
Welding responsible personnel |
H |
A |
Weld control |
Trial report |
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2) Welding process guide draft |
Weld control |
Welding process evaluation report |
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3) Welding process evaluation test |
Weld control |
Trial report |
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4) Welding process assessment report, approved by quality assurance engineer |
Weld control |
Welding process evaluation report |
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5. Welding process management |
1) Welding process document preparation, proofreading |
Welding responsible personnel, craftsmen |
And |
Weld control |
Welding process |
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2) Welding process changes |
And |
Weld control |
Change order |
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3) The welding process is implemented |
And |
Weld control |
Welding process |
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6. Product welding management |
1) Welder Qualification, Welder Stamp, |
Welding responsible personnel |
R |
B |
Weld control |
Documents, physical markings |
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2) Welding environment |
Welding responsible personnel |
R |
Weld control |
workshop |
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3) Welding process discipline |
Welding responsible personnel |
R |
Weld control |
Craft Discipline Checklist |
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4) Welding process |
Welding responsible personnel |
R |
Weld control |
Soldering process recording card |
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5) Welding inspection |
Inspector |
R |
B |
Weld control |
Inspection records |
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7. Product welding test board |
1) Specimen preparation: quantity, position, welding process, stamp |
Welding responsible personnel |
H |
A |
Weld control |
Product test plate welding records |
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2) Physical and chemical test: mechanical property test report |
Weld control |
Trial report |
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8. Welding rework |
1) Welding primary and secondary rework, super rework |
The person responsible for welding |
R |
Weld control |
Rework report |
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2 Re-inspection after repair |
R |
Weld control |
Rework report |
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Operational Process Control System |
1. Process preparation control link |
1) The process audit of the drawing |
Process responsible personnel, process personnel |
And |
Process control |
Audit record cards |
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2) Compilation and review of process plans |
Process control |
Craft cards |
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3) Compilation and review of process documents |
Process control |
Process card |
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4) General process rules and regulations |
Process control |
Process Code |
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5) Editing and review of material process quotas |
Process control |
List of material quotas |
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2. Process implementation quality control link |
1) Process discipline and supervision, process discipline implementation, quality situation |
Process responsible personnel, process technicians |
R |
Process control |
Process Discipline Checklist |
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2) Process changes |
Process control |
Change order |
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3) Process submission: product characteristics, process, technical requirements, quality standards, safety measures |
Process control |
Craft cards |
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3. Tooling design quality control link |
1) Tooling design advanced structure, reliability, applicability |
Process technician |
And |
Process control |
Tooling design drawings |
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2) Tooling drawing |
Process responsible personnel |
And |
Process control |
Tooling design drawings |
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3) Tooling verification, inspection and acceptance, manufacturing quality |
Process responsible personnel |
And |
Process control |
Tooling registration |
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Heat Treatment Control System |
1 Heat treatment process preparation |
1) Heat treatment process preparation, review |
Persons responsible for heat treatment |
And |
Heat treatment control |
Heat treatment process |
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2) Heat treatment process modification |
Persons responsible for heat treatment |
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2 Heat treatment preparation |
1) Heat treatment equipment |
Equipment Responsible Personnel |
And |
Device control |
Well equipped |
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2) Measuring instrument |
Measurement of responsible personnel |
And |
Metering control |
Verify the mark |
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3) Thermocouple calibration, temperature measurement point arrangement |
Measurement of responsible personnel |
And |
Metering control |
Verify the mark |
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3 Heat treatment process |
1) Post-weld heat treatment |
Persons responsible for heat treatment |
R |
Heat treatment control |
Time temperature graph |
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2) Time temperature curve |
Heat treatment technicians |
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4 heat treatment reports |
Heat treatment report, heat treatment record |
Persons responsible for heat treatment |
R |
B |
Heat treatment control |
Heat treatment reports, records |
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Inspector |
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Equipment Control System |
1 equipment planning, selection and installation and commissioning control links |
1) Equipment planning, equipment selection |
Equipment Responsible Personnel |
And |
Device control |
Equipment purchase planning |
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2) Accounting and filing |
Equipment Responsible Personnel |
And |
Device control |
Ledger |
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3) Equipment installation and commissioning |
Equipment technicians |
And |
Device control |
Recording |
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2 Equipment use and maintenance |
1) Equipment use: special use of fixed machine, equipment identification |
Equipment technicians |
And |
Device control |
logotype |
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2) Equipment maintenance, regular maintenance 1 complete appearance is intact 2 cleaning, lubrication, fastening, anti-corrosion 3 equipment capabilities |
operator |
And |
Device control |
equipment |
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3) Equipment overhaul, maintenance plan, maintenance records |
Equipment technicians |
And |
Device control |
Plan, record |
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3 Equipment accidents and scrap |
1) Equipment accidents |
Equipment Responsible Personnel |
And |
Device control |
Accident reports |
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2) Equipment scrapping |
Equipment Responsible Personnel |
And |
Device control |
Scrap orders |
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Design Control Systems |
1 Design conditions |
1) Review the design license category and level |
Design responsible person |
H |
A |
Design control |
Review records |
2) Issue a design task statement |
Head of Design |
And |
Design control |
Mission statement |
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3) Review of design conditions |
Design responsible person |
And |
Design control |
Conditional diagram |
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4) Compile design numbers |
Archivist |
And |
Design control |
Recording |
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5) Identify the designer |
Design responsible person |
And |
Design control |
Mission statement |
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2 scheme design control |
1) Collect relevant information |
Design responsible person |
And |
Design control |
information |
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2) Organizational structure review |
Design responsible person |
And |
Design control |
Review records |
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3) Modify and improve the design scheme |
Designers |
And |
Design control |
Scenario diagram |
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4) Preliminary stage design |
Designers |
And |
Design control |
plan |
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3 Design controls |
1) Design |
Designers |
And |
Design control |
plan |
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2) Preparation of design documents |
Designers |
And |
Design control |
plan |
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3) Proofread the design documents and fill in the proofreading records |
Proofreading and auditing personnel |
R |
Design control |
Proofreading records |
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4) Standardization review |
Standardized auditors |
R |
Design control |
Proofreading records |
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5) Design quality assessment |
Auditors |
R |
Design control |
Rating records |
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6) Design data archiving |
Archivist |
R |
Design control |
Archive |
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7) Stamp with design qualification stamp |
Design responsible person |
R |
Design control |
Working with records |
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4 design drawings foreign production drawings |
1) Design qualifications |
Design responsible person |
H |
A |
Supervision and inspection outline |
Review records |
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2) Design category, design level |
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3) Implementation of standards and integrity |
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4) Design changes |
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5 Information feedback |
Handle feedback issues |
Design responsible person |
R |
Design control |
Design return visit records |
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6 Data Archiving |
Design file archiving, complete and complete six books of documents, design drawing standard specifications |
Data Manager |
And |
Design control |
Archive |
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File Control System |
1. Receipt, classification, custody and issuance of foreign documents |
1) Reception and classification of foreign documents |
Standardized responsible personnel |
R |
File control |
File sending and receiving ledgers |
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2) Custody and issuance of foreign documents |
Standardized responsible personnel |
R |
File control |
Documents, sending and receiving records |
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2. Preparation, counter-signing and approval of internal documents |
1) Preparation of internal documents |
Responsible personnel of each department |
R |
File control |
Documents, sending and receiving records |
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2) Countersigning and approval of internal documents |
Responsible personnel of each department |
R |
File control |
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3) Custody and issuance of internal documents |
Responsible personnel of each department |
R |
File control |
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3. Manufacturing, installation, transformation and maintenance records |
1) Fill in, confirm and archive the process records |
Production and inspection responsible personnel |
R |
File control |
Procedure forms |
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2) Process record storage and retention period |
Production and inspection responsible personnel |
R |
File control |
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4. The validity of the file version |
The controlled documents and record forms used by the relevant departments and personnel for the implementation of the quality assurance system shall be valid versions |
Standardized responsible personnel |
R |
File control |
Valid version files |
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Contract Control |
1. Contract review |
1. Contract review |
Contractually responsible personnel |
And |
Contract control |
Contract review records |
|
2. Sales contract signed |
Contractually responsible personnel |
And |
Contract control |
Contract management ledger |
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2. Contract control |
3. Contract control |
Contractually responsible personnel |
R |
Contract control |
Contract change record |
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Nonconformance Control |
1. Record, identify, store and isolate |
1) Records and identification of nonconforming products or items |
Production and inspection responsible personnel |
R |
Non-conforming products control |
Records and scenes |
|
2) Storage and isolation of non-conforming products or items |
Production and inspection responsible personnel |
R |
scene |
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2. Cause analysis, disposal and inspection |
1) Cause analysis |
Process responsible personnel |
R |
Review and disposal of nonconforming products |
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2) Formulation, review, approval and implementation of corrective plans |
Process responsible personnel |
R |
Corrective solutions |
||||
3) Reuse re-inspection |
Process responsible personnel |
R |
Recycling orders |
||||
3. Thorough disposal of scrap items |
Validation of thoroughly scrapped items |
Process responsible personnel |
R |
Scrap orders |
Note: Class A Supervision Point Class B Supervision Inspection Point H Stop Point R Management Point E Checkpoint
Occupational Health and Safety Management System Certificate
Design, Development and Production of A1 Temperature & Pressure Reducing Devises, Control Valves, Ball valves, Butterfly Valves, Gate Valves, Globe Valves and check Valves within the scope of Qualification and Related Management Activities.
Certificate of Compliance
API standard 607, Seventh Edition, June 2016. Qualified Range of Test valve: 4" DC5623-300lb Ball Valve, Qualified Pressure Rating 300,400.600.(According to API 607 table5) Qualified Sizes (NPS) 4" 6" 8"( According to API607 table3) Qualified Marking: Qualified Valve Shall be Permanently marketed, (According to API 607 Para7)
Certificate of Compliance
API standard 607, Seventh Edition, June 2016. Qualified Range of Test Valve: 8" DC5623-300lb Ball Valve, Qualified Pressure Rating 300,400.600.(According to API 607 table5) Qualified Sizes (NPS) > 8"( According to API607 table3) Qualified Marking: Qualified Valve Shall be Permanently marketed, (According to API 607 Para7)
Certificate of Compliance
API standard 6FA, Forth Edition, June 2018. Qualified Range of Test Valve: 8" DC5812-300LB Butterfly Valve, Qualified Pressure Rating 300,400.600.(According to API 6FA table3) Qualified Sizes (NPS) > 8"( According to API6FA table2) Qualified Marking: Qualified Valve Shall be Permanently marketed, (According to API 6FA Para7)
Functional safety certificate
Ball Valve DC5621, DC5622, DC5623, DC5624,DC5631. has been assessed per the relevant requirements of IEC 61508 PARTS 1-2 AND 4-7: 2010 Safety Function: The Ball valve will move to the designed safe position when de-designed/energized within the specified safety time. Application Restrictions: The unit must be property designed into a safety instrumental function per the safety manual requirements. It is suitable to be safety function according to the description and the configuration.
Functional safety certificate
Butterfly Valve DC5811,DC5812, has been assessed per the relevant requirements of IEC 61508 PARTS 1-2 AND 4-7: 2010 Safety Function: The Butterfly valve will move to the designed safe position when de-designed/energized within the specified safety time. Application Restrictions: The unit must be property designed into a safety instrumental function per the safety manual requirements. It is suitable to be safety function according to the description and the configuration.
Functional safety certificate
Control Valve DC1611,DC1621(M),DC1624(9),DC1624(9)L/X,DC1624(9)D/E/M,DC1811,DC1821(M),DC1824(9),DC1824(9)L/X,DC1824(9)D/E/M,DC1920,DC1930 has been assessed per the relevant requirements of IEC 61508 PARTS 1-2 AND 4-7: 2010 Safety Function: The Control valve will move to the designed safe position when de-designed/energized within the specified safety time. Application Restrictions: The unit must be property designed into a safety instrumental function per the safety manual requirements. It is suitable to be safety function according to the description and the configuration.
Certificate of Compliance
Gate Valve 8" DC6012-300LB, API STANDARD 6FA, FORTH EDITION, JUNE 2018 Qualified Pressure Rating(Class): 300,400,600.(According to API 6FA table3) Qualified Sizes(NPS):>8"(According to API 6FA Table 2) Valve Material: ASTM A216 WCB Qualified valves shall be permanently marketed: (according to API 6FA Para.7)
Business Type | Manufacturer |
Company | Zhejiang DongChen Valve Technology CO., Ltd |
Main Products | Mechanical Parts & Fabrication Services |
Website | www.chinadocn.com |
Established Year | 2006 |
City / State | Hangzhou , Zhejiang |
Country | China |
Address | No.101, Qihang Road ,Renhe Street, Yuhang District |
Location | No.101, Qihang Road, Renhe Street, Yuhang District, Hangzhou City |
Factory Size | 5,0000 square meters |
Total QC Staff | 5 |
Total RND Staff | 14 |
Number of Production Lines | 50 |
Annual output | 100 M RMB |
Average Lead Time | 1 Months |
Total Revenue | 100 million RMB |
Export Percentage | 10% |
Nearest Port | Shanghai / Ningbo |
Overseas Office | Karachi, Pakistan |