... , Anti-slipping patchCategory: 1. by components Bolts, Screw bolts/Studs, Nuts, Tapping screws, Wooden screws, Washers/Gaskets, Check rings, Pins, Rivets ... .Certificates: ISO 9001:2008 WE CAN products are bolts, screws, nuts, machine screws, plain washers, spring lock washers, wood screws, tapping screws ... new clients to visit our factory. we can product this machine as customers' requirements. screws