Gelonghui April 19 丨 Zhengguang Shares (301092roulette247.SZ) said on the investor interaction platformroulette247, the company's main business is the research and development, production and sales of ion exchange and adsorption resin products. The electronic grade resins, nuclear grade resins, low TOC electronic grade polishing resins and other products produced by the company can be used in semiconductors, large-scale integrated circuits, chips, etc. Industry ultra-pure water processing. The research and development and manufacturing of semiconductor products are not involved.