... steel, iron ( SPCC, SECC, SPTE, tinplate), aluminum alloy, red copper, brass, bronze alloy are available.(2) Metal processing: stamping, deep drawing , spot or seam welding, spinning, metal ... : We own laser machine 2 sets, CNC punch machine 6 sets, bending machine 11 sets, ... for Fusion Welding of Steel" , EN287-1 certification.(6) We are experienced of OEM manufacturer for various kinds of sheet metal ...