... Steel(SPCC, SECC, SPTE, tinplate), # aluminum alloy sheet# red copper, brass, bronze alloyProcessStamping, deep drawing,metal spinning ... , welding,riveting,CNC Machining, ultrasonic cleaning, sheet metal fabrication, and metal assembly. Surface Treatmentplating (Zinc ... , Nikel, Chrome, Tin, Ag); Painting, Powder, wire drawing,Anodizing, E-coating, Silkscreen,pad print, Heat treatment ...