China High Speed Transmission Equipment Group Company, Ltd. (SEHK: 658) or China High Speed Transmission, China High Speed, is a high-speed gear transmission equipment manufacturer in China.

It is the largest wind power transmission gear manufacturer in China.

[1] China High Speed Transmission was founded in 1969, formerly Nanjing Machine Tool Repairing Plant.

In 1976, the plant was expanded and transformed to a gear manufacturer and changed its name to Nanjing Gear Box Factory.

[citation needed] It was listed on the Hong Kong Stock Exchange in July 2007 with its IPO price of HK$7.08 per share.