Specialty in maunufactuering screw nut machine and hardwareProduce multi-function screw nut by our forging machineDong guan Song Wei Machinery Hardware Products Co. LtdLocated in DongGuan, Guangdong Province,ChinaThe cold header brand enterprises in Taiwan Our company, a Taiwan funded enterprise, has been specialized maunufactuering screw nut machine and hardware for 20 years. Dongguan factory was founded in 1994. We got the ISO9001:2000 certifi cation. ALL the machine parts are mainly imported from Taiwan.