On December 12, Gelo Exchange reported that Qingdao Guolin Technology Group (300786.SZ) stated on the investor interaction platform that its subsidiary Guolin Semiconductors currently focuses on main business products including: ozone gas generators, ozone gas delivery equipment, semiconductor-grade high-concentration ozone water systems, ozone water concentration detection instruments, and ozone exhaust gas decomposers, which can be applied in micro-processing fields such as Semiconductors, photovoltaics, and optoelectronics. Currently, these make up a relatively small proportion of the company's revenue.