Nanjing High Accurate Drive Equipment Manufacturing Group Co., Ltd. (NGC) is a large enterprise, producing high speed heavy duty gearbox and ranked as one of the 100 most competitive enterprises of Chinese machinery industry. The company was formerly known as Nanjing Factory Repair Factory, founded in 1969. In 1976, it was reconstructed and expanded to a professional gearbox manufacturer and was renamed as Nanjing High Speed Gear Factory. In 2001, it was restructured to a stock company. In 2007, it was listed in Hong Kong with the stock name of China High Speed Transmission. Adhering to the spirit of "climb up the summit step by step, strive for perfection bit by bit", through over four decades development, the company has become a leading enterprise among China gearbox market as recognized and has ranked among the world leaders in technology, equipment, product performance and so on. The company now has a total market value of 28 billion Yuan and the sales revenue in 2009 is 8.5 billion Yuan.

    Nanjing Ningjia Machinery and Electronic Co., Ltd , a wholly owned subsidiary of Nanjing High Accurate Drive Equipment Manufacturing Group Co., Ltd, located in 700 acres production base of the group company, is a professional enterprise designing, manufacturing and selling hardened gearbox for rubber and plastics machinery industry .There is 103 staffs, including 31 technicians. The products are equipped in the world's major rubber, tire, and the plastic industry users. We work closely with major OEMs to develop advanced high-performance, low noise, energy-saving and environmental protection, various types of gearboxes. The major products of the company includes: internal mixer gearbox, open-type mixing mills gearbox, gear for extruder & calendar, following auxiliary gearbox, single-screw extruder gearbox and parallel twin-screw extruder gearbox.