... zinc plated etc.2.Variety of standards:ISO,GB,DIN,JIS,ANSI3.We have passed ISO9001-2008,SGS,ROHS ... .We commit ourself to smile to each customers. Product name copper screwMaterial1.Stainless Steel: SS201, SS303, SS304, SS316, SS416, ... plated, white plated, yellow plated,black.StandardISO,GB,DIN,JIS,ANSICetificateISO9001-2008,SGS,ROHSFunctionAatomobile,electronic,mechineryPackageSuitable for sea and ...