Kangwei has established business partnerships with some subsidiaries of CRRC, such as supplying high-speed Special transmission business, gearbox, engine, wheel set, bearing, air Spring, cable and other products. We have delivered more than 12,000 sets of gearbox on China high-speed EMU project, including Fuxing and harmony, and major gearbox repairs have been carried out at the same time, with more than 6,000 sets of gearbox repairing.