... black, engraving fonts 3,ROHS products Product name Aluminum cap/cover Materials Available1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS4202 ... , etc.Surface Finishannealing, natural anodization, heat treatment, polishing, nickel plating, chrome plating, yellow passivation, gold passivation, galvanizing, satin, etc.Processing Methodcnc ...