TECHSEM was founded in 1966 and listed on the GEM of Shenzhen Stock Exchange in 2010. The stock is referred to as "TECHSEM Stock" and the stock code is "300046". The registered capital is 237.17 million yuan.

The company is mainly engaged in R&D, manufacturing, sales and service of high-power semiconductor devices and their components such as power thyristors, rectifier tubes, and power semiconductor modules. The products are widely used in steel smelting, motor drive, high-power power supply, transmission, transformation and distribution, rail transit, welding machine, new energy, national defense and other industries and fields.TECHSEM is currently the only listed company in the domestic power electronics industry -- high-power semiconductor device segment, with comprehensive strength, device production capacity and sales scale in the forefront of the domestic industry.

The company is the vice chairman unit of the Power Electronics Branch of China Electrical Appliances Industry Association and A high-tech enterprise in Hubei Province. It has been awarded the honorary titles of "Hubei Famous Brand Product, China Well-known Trademark, tax credit grade A taxpayer, National Model worker's home, Hubei Labor integrity Guarantee Unit".Conscientiously fulfill social responsibilities in the aspects of tax payment, employment absorption, labor security, community management, and new rural construction, and make due contributions to promote the development of the company.