Guangzhou Jingke Electrical Appliance Co., Ltd. is the predecessor of the power semiconductor, environmental protection equipment and Engineering Research sub branch under the Institute of electrical science. Our company has been engaged in the research, development and production of power semiconductor devices for more than 40 years. The patented products include: heat energy garbage disposal machine, cleaning and cleaning vehicle, exhaust gas treatment equipment and so on. It is one of the directors of the power electronics branch of the China Electrical Technology Association. The product has obtained the production license through the inspection of the industry and obtained the credentials in the electronic industry and certified by the ISO9001 quality management system. Products are exported to all parts of the country, well received by users, and received many awards. The high power thyristor has been awarded the first prize of the quality evaluation of the mechatronic unit in the application of the excitation device of the hydro generator, and the high power rotary silicon has won the scientific and technological progress award of the machinery department. Limited voltage diodes, rotary diodes and various modules have been awarded several national patents. The products are sold to the major manufacturers throughout the country: Shanghai Baoshan steel, Ma'anshan iron and steel plant, Anyang power plant, Xinfeng river water power station, Sanmenxia power station, Shaoguan power station, and Southeast Asia and other places. In accordance with the concept of "environmental protection, energy saving, scientific and technological innovation", our company constantly improves the R & D strength, improves the quality of the management system with high quality products, and provides our customers with high quality service.