hardware/fasteners/bolts, 1.varieties of specifications 2.Different Performances, purposes 3.standardization,Generalization hardware/fasteners/bolts,1.varieties of specifications2.Different Performances, purposes3.standardization,Generalization4.low pricesWe produce all kinds of bolts, screw, nuts,nail, thread rod etc. iron, steel, alloy etc. all kinds of Bolts,nuts, screw