Our factory adopts the most cold heanding machine ,drllingmachine and other machine are from Taiwan, specializingin the production of self-drilling screws with self-tappingscrews, hidden bracket,  strong magneticsleeve.Productquality through strict quality inspection certification, selftapping screw exported to Indonesia, Malaysia, the United Statesand other developed countries overseas.Sendsincere people in line with the honest and trustworthy, quality,customer supreme principle, will better serve the customer,customer calls welcome letter talks!!!!!