... 10 years supplier 3.ISO,SGS certification 4.Canon Machine Bolt A: SpecificationMaterial:stainless steel, aluminum,carbon steelSurface Finish:nickel ... DIN,JIS,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/ ... , Dongguan Jinri Metal Products Co., Ltd. will be a good manufacturing partner as your need. machine bolt