Shenzhen Tongye Technology Co., Ltd. designs, develops, manufactures, sells, and provides after-sales and maintenance services for electrical equipment used in rail transit locomotives and rolling stock in China. Its product lines include power products such as power supply cabinets, chargers, emergency ventilation and auxiliary inverters, train and auxiliary power supply cabinets, on-board bidirectional and supercapacitor charging devices, air conditioning power supplies, hybrid energy storage systems, emergency power supply systems, hydrogen energy bidirectional DC-DC power supplies, and step-down regulated power supplies. The company also offers intelligent control products, including logic control units, suspension and air conditioning controllers, intelligent air conditioning control panels, intelligent solid-state contactors, intelligent electrical control systems, low-voltage electrical appliance monitoring systems, battery management systems, network cards, thermal management systems, and electronic controllers. In addition, it provides motor and fan products such as asynchronous motors, permanent magnet synchronous motors, and ordinary and EC fans, along with accessories for power supplies, intelligent controls, motors, and fans, as well as regular maintenance and fault repair services for rail transit vehicle customers. Its products are used in railway locomotives, urban rail transit vehicles, high-speed trains, and other rail transit locomotives and vehicles, as well as in urban rail transit ground charging systems. Founded in 2000, the company is based in Shenzhen, China.