Company Profile

Quality first. Reputation established.

Under the long-term corporate philosophy of quality first and customer first, all employees of Cheng Yi Precision Technology Co., Ltd. and the company have been growing steadily together.
Our related company is Long Jian Rong Enterprise Ltd. (LJR), which is responsible for the production of automatic bar feeder parts, while CHENG YI is responsible for the production of lathe parts. The CHENG YI, LJR dual brand is marketed all over the world.

Our company upholds the principle of equality and mutual benefit. We have built up a core competitive advantage with a sound management system and quick response to the market. Thus, established a good reputation and cooperation base. We have been cooperating with dozens of automatic bar feeder companies and CNC automatic lathe companies in China and abroad for decades.
Our products are sold in 27 countries in Europe, U SA, and Asia. With excellent technology and experience, we provide our customers with top quality products.

3000000+Stock quantity
500+Dealer
66+Machinery factory customers
40+Sales country
The highest concentric precision of lathe collets and lathe guide sleeves has reached within 0.003mm. This product precision has approached the Japanese standard. Today, the inner-hole range of HS S collets is 0.5~65mm, and the inner-hole range of tungsten steel col lets and guide sleeves is 0.5~51 mm.
We also produce ceramic guide sleeves for special use in stainless steel processing, to meet the increasingly sophisticated processing conditions.
ER collets, water-stop collets, and SK precision collets are available in grades A and AA (grade UP). The highest precision is within 0.005mm, which can be used by CNC lathe factories, CNC milling machine factories, and knife handle factories to improve processing accuracy.
Core competitiveness

We provide high quality parts for all major machine factories around the world, and effectively reduce production costs and increase the international competitiveness of major machinery factories.

Excellent quality
The production accuracy has reached the level of the same industry in Japan.
Professional ability
Give the best production suggestions.
R&D technology
Existing ability to improve and innovate products.
Elastic manufacturing
Produce the most high-quality products in the least time.

As of 2022, we have 64 partner lathe factories, milling machine factories and feeding machine factories all over the world. As of 2022, there are 64 lathe factories, milling machine factories and feeding machine factories all over the world. In response to customer demand, our inventory has reached the following levels: over 36,000 collets and guide sleeves, 40,000 ER col lets, over 1.4 million finger chuck, over 300,000 Revolving tip (rotating), and over 6,000 power and non-powered tool holders. All of which are at record highs. By implementingelasticity production, we can provide the most and best quality products in the shortest time to meet customers'maximum demand in real time. We have achieved fast delivery, good quality and sufficient inventory. In the fixture category, we can provide one-stop shopping.

We are now the preferred partner for CNC lathe factories, automatic feeding machine factories, milling machine factories, tool holder factories, and distributors around the world. In recent years, our company has developed into an integrated manufacturer of lathe parts. Our CNC lathe machines can provide products including slide sleeves, collet bushings, tie rods, front covers, guide sleeve outer bushings, collet bushings, non-powered tool holders, powered tool holders, collets, guide bush, drilling shafts, ER collets, water stop collets, tapping collets, etc. One-stop procurement is possible. We provide high quality parts for all major machine factories around the world, and effectively reduce production costs and increase the international competitiveness of major machinery factories.