... . stamping machine, hydranic punching machine, bending machine, TIG welding,MIG welding, CNC cutter etc. finish treatment: power coating, ... enhanced with in-house secondary operations such as tapping, welding, tube bending, cutting, assembly, plating, painting, heat ... material, starting with common steels, spring steel, brass, aluminum, stainless steel, copper, tinplate, galvanized, electro-zinc, HRP ...