Gelonghui, March 13 | Kejingyuan (301372.SZ) said on the investor interactive platform that as a national specialized and new “little giant” enterprise, the company attaches great importance to technology research and development and has nearly 100 authorized patents. The self-developed rapid biological treatment technology and spore transfer technology have successively broken through technical problems such as ultra-extreme denitrification, ultra-extreme phosphorus removal, low-temperature sewage biological treatment, sludge source reduction, micropolluted water biological treatment, and black and smelly water treatment. In the field of cooling circulating water systems, the company has developed water treatment technologies such as radio frequency water treatment, physico-chemical water treatment, intelligent ion balance, and biofilm treatment with independent intellectual property rights to provide customers with cooling circulating water treatment design solutions, water treatment product production and project operation services. It has also been successfully used in various fields such as treatment of central air conditioning circulating water systems in urban subway stations, data centers, airports, power plants, steel mills, sports stadiums, hospitals, etc., urban heating circulating water treatment, industrial circulating water system treatment, and fractionated water supply system treatment.