Guizhou Taiyong-Changzheng Technology Co., Ltd. manufactures and sells low-voltage circuit breakers in China. Its products include dual power automatic transfer switches, transformers, industrial control automation products, other medium- and low-voltage electrical components, and system integration equipment, along with smart cloud, electrical distribution, charging pile, fire protection, and digital home services. The company serves the rail transit, data communication, building, healthcare, industrial, wind power, photovoltaic, and new energy charging sectors. Formerly Guizhou Changzheng Switch Manufacturing Co., Ltd., it changed its name in October 2015, was founded in 2008, is based in Zunyi, China, and is a subsidiary of Shenzhen Yongtai Technology Co., Ltd.