Colored metal flat washers OEM from China; Certification:ISO14001 ISO9001 SGS Specifications Colored metal flat washersProcess Capablilities Standard ISO, GB, DIN, JIS, ANSI ... , 10.9, 12.9 etc. Size M0.8~M12 Material Stainless, Steel,Brass, Steel,Bronze, Iron,Aluminum,Carbon steel, ... or according client’s requires About us: Xiamen Haixingcheng Metal Products Co., Ltd. is a manufacturer of screws with ...