In 2009, the Soletks Group entered the flat-panel solar industry with its independently developed and manufactured PVD highly weather-resistant selective absorption coating.In 2010, Soletks Group integrated modem manufacturing into the production of flat-panel solar collectors, leading China's flat-panel solar industry into the modern production stage and achieving rapid development with a compound growth rate of 88% for 10 consecutive years. From 2021 to 2022, Soletks Group's flat-panel solar collector output ranked second in the world for two consecutive years.At present, Soletks Group has become the only company in the world that produces both "black coating "and "blue coating" for flat-panel solar energy, and has become a full industry chain manufacturer in the flat-panelsolar thermal industry.