Contact Us
Rose Tang

Phone Number : 15223140385

WhatsApp : +8615223140385

Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.

Professional manufacturer of drill bits and diamond tools in China.

  • Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.
  • Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.
  • Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.
  • Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.
  • Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.
Main Market: North America, Western Europe, Eastern Europe, Eastern Asia, Southeast Asia
Business Type: Manufacturer
Brands ZHONGZUAN No. of Employees 50~150
Annual Sales 5000000-10000000 Year Established 1995
Export p.c 60% - 70%

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. We’re 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.

Zhongzuan has professional technical personnel and experienced machine-tool operators,which makes us the capability of producing products with complex shapes and high-precision.Meanwhile, our professional after-sales team can quickly deal with customers on product quality and after-sales issues. Company is equipped with more than 100 sets of numerical control equipment and over 10 sets sophisticated detection equipment, which ensures the quality of massive production, at the same time, all steps from raw material procurement, processing, quality inspection, shipments will be strictly required to reach the standard, which makes our products more competitive in the international market so that our customers can also expand larger markets and make more profits.

Zhongzuan (Chongqing) Precision Tool Manufacturing Co., Ltd. is committed to improving product’s quality and management level, striving to become a modern enterprise with high-quality products, customer’s recognition, advanced technology and harmonious development.


- 1995: Chongqing Changjiang Diamond Tool Factory, the parent company of Heavy Drilling, was established. The company's main business was natural diamond tools for grinders.


- 2000: The company increased its CBN and PCD cutting tool business.


- 2002: Added a high-speed steel drill bit production line.


- 2003: In view of the strong demand for high-speed steel drill bits in the Chinese market, the company decided to add three high-speed steel drill bit production lines to increase the daily production capacity from 100,000 to 400,000.


- 2004: The company adjusted its business development strategy and began to expand and deploy to the national market on a large scale.


- 2005: Developed micron-level precision diamond tools, achieved a breakthrough, and achieved mass production in the same year.


- 2008: Relying on the company's rich experience in the field of diamond tool manufacturing, the company decided to increase the production line of diamond saw blades and diamond hole saw products.


- 2010: Through the efforts of more than 10 technicians of the company, after more than two years, developed a low temperature welding material suitable for diamond saw blades and hole saws. The application of this welding material increased the service life of the product by 40%-50%.


- 2011: Established Shanghai office, responsible for pre-sales and after-sales work for customers in Shanghai and surrounding areas.


- 2012: The company invested RMB 70 million to establish a CNC production workshop, and 46 high-precision CNC grinders and testing equipment were put into production, which increased the production efficiency by three times and reduced the number of operators by two-thirds.


- 2017: Established Heavy Drill (Chongqing) Precision Tool Manufacturing Co., Ltd., responsible for the marketing and maintenance of the company's products in foreign markets.


Pre-sale service

* Understand your needs and recommend the best products for you
* Provide detailed product information and samples for your testing
* Provide you with the best price
* Provide the best solution to meet your requirements


Sales service

* Producing the best quality products for you
* Complete order production on time
* Delivery for you in time


After-sales service

* Tracking and understanding of customers' use of products
* Solve problems in time


Technical Support

* Provide your requirements to the technicians
* Make samples according to your requirements
* Provide you with the best technical services to solve your problems

Our Team

China Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd. company profile 0

China Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd. company profile 1