... and black, engraving fonts 3,ROHS products Product name Metal housing Materials Available1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS4202 ... anodization, heat treatment, polishing, nickel plating, chrome plating, yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc machining, turning, milling, drilling ...