... Fastener screw, hardwere screw, ball screw, hex screwbolt screw, bolts and nuts, self drilling screw, self tapping screw, machine screw, furniture ... 2) Head style: pan, round, flat, oval, truss, hexagon flange, bugle, wafer, hinge, binding, button, truss3) Surface treatment ... are being exported to more than 10 countries and regions. and they're always received favourably.Our manufactures guarantee ...