... 250t trial assembly crane, 20t gantry crane, Gantry-type NC planer drilling machine, Automatic numerical control, large ... drilling machine, PP103 automatic connecting plate production line, Hydraulic NC 3-roll plate bending machine.d)Certificate:Certificate ... .d)Products:Electric Tower, Telecom Steel Tower, TV/radio Broadcasting Steel Tower, Wind Power Tower, Communication Tower and so on.e ...