Zhongzuan(Chongqing)Precision Tool Manufacturing Co.,Ltd was found in 1995 and specialized in researching and producing high-quality hole saw bits and drill bits over 26 years,always aiming to be the leader and produce the best products. ZhongZuan was specially registered brand for overseas markets in 2017 from Changjiang Zuanshi,core products are Diamond hole saw bits,HSS twist drill bits,carbide drills and so on.

Zhongzuan is located in Chongqing, China and it covers about 11700 square meters. Registered capital reaches up to RMB 5millions and currently there are over 120 employees. Zhongzuan owns rich experience in the design,manufacturing as well as use. Were dedicated to design products for complex processing condition,help clients solve various problems of products and provide professional solutions.ZhongZuan has been cooperating with customers from over 10 countries globally so far.