Dongguan King-tower Hardware Co., Ltd is one of the largest enterprises to produce tight firmware in Mainland China. China screw manufacturer choose King-Tower. Our company produces all kinds of combination screw, micro screw, security screw, Chiacgo screw, special custom screw, laptop screw, plastic head screws, thumb screw, lathe nut, and machine screw, to meet various standard requests from different countries. All the equipment is introduced from the United States, Japan and Taiwan. Good equipment, consummate craft and strict management enable the quality of the products and service standard to reach the level of international market.