... 2.free sample, more than 10 years supplier 3.ISO,SGS certification 4.Canon Machine Bolt A: SpecificationMaterial:stainless steel, aluminum ... paper bag,or according to the cutomers'requirementStandard:DIN,ISO,JIN,BSmin Order:100,000 pcsWe also produce according ... your requirement is okStandardGB,GB/T,DIN,JIS,BSW,ANSI,ISO & non-standard productsSurfacePlain, Yellow zinc, black phosphated, grey ...