Ours company established by founder Mr. Shi Aching in 1988, take produced the common tooth gauge (M, UN, G, NPT, PT, BC, SM, NPSM) as the main axle, expanded the plant scale after 1994, joined produces tooth of gauge other more special specification (Tr, DIN, ACME, Rc, BSP, BSPT, BSF, BUTT). Along with domestic precise industry vigorous development, is opposite more and more is also severe to the accuracy request! For can strive for perfection to serve the customer, this company in 2001 through German TUV-ISO-9002 quality authentication system (precision measuring instrument screw gauge and manufacture of and sale the thread cutting tool).