... OT etc.)Hangzhou Weidu Steel Structure Co.,Ltd is a privately-owned steel construction company of limited liability, which specialized in design, ... buildings.Hangzhou Weidu Steel Structure Co., LTD is located in Tonglu, Hangzhou and occupys an area of 50,000 square meters. It ... an integrated company with the design, manufacture and installation of the steel structure frame, wire frame, truss and high ...