Fastener, Hex Bolts, Stainless Steel Bolts manufacturer / supplier in China, offering 1000h Salt Spray M20 Bolts Class 10.9 & EU Farm Compliant, Galvanized Class 10.9 EU Fasteners 1000h Salt Spray & CE Certified, Euro Market Grain Silo Bolts Class 10.9 + 1000h Zinc-Flake Coating and so on.