In more than 20 years of course of development since established in 1985,our company had always been devoted to the R&D and production of drill chuck and CNC machinery tools accessory.At present,our main product lines is five series of keyless drill chuck、key type drill chucks、self-tighen drill chucks、self lock drill chucks、CNC and machinery tools accessory,which also can be divided into thousands varieties,the annual production capacity of our company is up to more than 40 million units. The company passed the certification of ISO9001:2000 in 2001,by virtue of its own technical advantage our products have got a really international market.,been sold well in more than 100 countries and regions ,became the global suppiler of BOSH、Black&Decker、HITACHI、Keyang and other well-known international firm .