Qingdao Guolin Technology Group Co., Ltd. (hereinafter referred to as Guolin Technology) was established in 1994, which is a high-tech enterprise engaged in researching, manufacturing and trading. As a professional expert of Ozone solution, Guolin Technology invests itself in ozone generation mechanism study, ozone equipment design and manufacture, ozone application engineering design, installation, commissioning, operation and maintenance. It has an ozone equipment production base covering an area of more than 130 acres, which is making Guolin Technology become the leading enterprise in China's ozone industry. Guolin Technology (Stock code: 300786.SZ) was officially listed on the GEM of Shenzhen Stock Exchange on July 23, 2019, becoming the first listed enterprise of ozone industry.