Dongguan City Ling Guan hardware processing shop was founded in August 12, 2004, is the earliest one of the professional production of tap and die hardware manufacturers, the production scope includes, straight groove screw, screw tap, squeeze tap, non-standard screw, apex silk attack, all kinds of non-standard custom silk attack and so on, can produce including, metric, British, American, three categories of products, a variety of tap tap, thread for silk attack, external thread special die, do thread tool, we are more professional