... .8.. Non Standard Bolts,Non Standard Hardware,USA Bolts And Nuts.1.What’s the specification of our Products ? MaterialsCarbon ... plated,Tin plated,Black phosphating ,anodized ,Parkerising,and Environmental Plated is used in our products,Hexavalent chromium are accord with ... We have special research person and more than 100 equipment to produce fastener.Perfect quality 1.In Carbon Steel,The material are ...