Self Drlling Screw serial and mean-while we also have sub production line for Drywall Screw,Chipboard Screw and Tapping etc.

• 钻尾螺丝系列（六角华司头、盘头、钮扣头、喇叭头、六角法兰头、小仔头等），同时也生产干壁钉、纤维板钉和自攻钉等自攻类螺丝。