... 250t trial assembly crane, 20t gantry crane, Gantry-type NC planer drilling machine, Automatic numerical control, large hot galvanizing ... welding center, Straight flange welding machine, NC torch cutting machine, 6-shaft NC tube intersection-cutting line, Large drilling ... machine, PP103 automatic connecting plate production line, Hydraulic NC 3-roll plate bending machine.d)Certificate:Certificate for ...