STI, founded in 1956, is one of the leaders in the field of environmental and reliability testing in China. The Group's main products include mechanical environment testing equipment and climatic environment testing equipment. It belongs to the high-end equipment manufacturing industry in the field of testing machines and opto-mechatronics. It is used to simulate vibration, shock, drop, temperature, humidity and other comprehensive environment conditions to assess the quality and reliability of the products, which are currently widely used in aerospace, shipbuilding, communications, electronics, automotive, rail transit and other fields.