... 10 years supplier 3.ISO,SGS certification 4.Canon Machine Bolt A: SpecificationMaterial:stainless steel, aluminum,carbon ... and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,etc.Heat TreatmentTempering,Hardening,Spheroidizing,Stress ... ,JIS,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/ ...