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Weihai Puyi  Environmental Technology Co., Ltd., founded in 2013, is located in Huancui Technology Industrial Park in Weihai City, Shandong Province, covering an area of 570 hectares with a total planned construction area of 200,000 square meters. The company is mainly engaged in R&D, production, sales and EPC project of marine exhaust gas cleaning system, which has obtained certification of major classification societies in the world and IAPP certificate in China. The marine exhaust gas cleaning equipment developed by Puyi offers a series of open-loop and hybrid technologies for shipowners to choose from. The company has also obtained more than 50 patents and software copyrights.

Puyi emphasizes technology in marine environmental protection and energy conservation, and has successively launched integrated desulfurization and decarbonization systems (carbon capture), marine shaft generation systems, and marine electric propulsion systems, providing overall solutions for marine environmental protection and energy conservation.