... 10 years supplier 3.ISO,SGS certification 4.Canon Machine Bolt A: SpecificationMaterial:stainless steel, aluminum,carbon steelSurface ... color zinc,black oxidemetric and inch sizesize: M4-M33packing:carton box,poly bag and paper bag,or according to the ... DIN,JIS,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/ ...