The company was founded in October 1992. The controlling shareholder is Shanghai Zizhu High-tech Zone (Group) Co., Ltd., which is mainly engaged in R&D, production and sales of pressure, flow, temperature measuring instruments and control instruments such as control valves and electric actuators, as well as automation engineering services. Listed on the Shenzhen Stock Exchange on August 2, 2006. The company's main business is divided into two industries, namely instrument manufacturing and automobile inspection tool manufacturing. The main products are automated instruments such as pressure transmitters and electromagnetic flowmeters, environmental monitoring equipment and integration, and automobile inspection tools. Company honors: Shanghai famous brand products, Shanghai famous trademarks, national key new products, etc. It has successively won honors such as “Shanghai Key New Product”, “Shanghai Famous Brand Product”, “Shanghai Famous Trademark”, and “National Key New Product”.