... black, engraving fonts 3,ROHS products Product name Aluminum cap/cover Materials Available1. Stainless Steel: SS201, SS303, SS304, SS316, ... CuZn37), C28000(CuZn40)4. Bronze: C51000, C52100, C54400, etc5. Iron: 1213, 12L14,12156. Aluminum: Al6061, Al60637.OEM according to your ... ample experience and own top technology level in the industry with wide high-end customers network for precision eccentric ...