Changkong Precision Machinery Company is major and standing out in design and manufacture fine and middle mould gears and transmission components, which is a part of AVIC, the vice-director unit of fine mould gear committee of China Gear Association. It was founded in 1969.

The company has the 700 employees, including 114 middle and senior engineers, 337 Middle and senior mechanical technologists, which has the strong ability of manufacture, inspection, has 1000 sets manufacture machine and inspection equipments, the product widely be used in aviation, spaceflight, electron, weapon, nucleus industry, shipping, automobile, electric vehicle, textile, print, and other mechanism transmission area, has the ability of producing 80 M pieces fine mould mechanism and 8 M pieces middle gears per year, the dominance product is middle and high quality gears, foreign trade and sale in domestic market are coexistence in ChangKong company.

The outstanding domestic speciality feature and industry predominance has been made CHANGKONG Gear famous in domestic and overseas gear trade. Widely be approved by user, confirmed the independent trait profile. The product is sold in Europe, USA, Japan, Korea, Hongkong and Taiwan, confirmed as a long-term gear supplier by famous international industry.

CHANGKONG PRECISION MACHINERY COMPANY has the mature design and manufacture technology in the planetary reducer and transaxis area, which can provide the solution plan of various gear box reducer and transmission system according to the customer's requirements.

The company has passed the ISO9001: 2000 and the ISO 16949 quality management system, the AS 9100 quality management system is on the March, and passed the licence of weapon arming manufacture, the product quality and after service be admired by domestic and foreign customer.