... optional 3.Advanced surface treatment techonlogy OEM electrical metal box we can design and fabricate complex precision tooling by ... our own stamping machines as your requestsOEM electrical metal box Description1.Tooling and assembly in house2.Competitive price3.High ... plating;3.Surface treatment:kinds of plating (Zinc, Nikel, Chrome, Tin, Ag); Painting, Powder, Anodizing, E-coating, Silkscreen, Heat ...