JZ-I-H electric trolleys (oblique bucket) are highly recommended if you are working a little distance apart or the cargo is heavy, making it harder to carry or push/pull your trolley around.
Electric options are far easier to use than push or pull trolleys as all the work is done by the battery, as opposed to your body. That would be reduce the labor cost, and could simply and efficiently complete your work. That is your best choice.
https://www.wfjpre.com/JZ-Electric-Trolley-oblique-bucket.html
North of Cuifang Street of Beihai Road, Fangzi District, Weifang City (Machinery and Equipment Park)