Fastener, Hex Bolts, Stainless Steel Bolts manufacturer / supplier in China, offering Plastic Capped Water Proof Stainless Steel Round Head 4 Rib Silo Bolt, A4-80 Stainless Steel Water Tank Bolt with 1200h Salt Spray Test, High Tensile Grade 8.8 Storage Tank Bolt DIN 933 and so on.