Which three listed companies of Ruiyang Group?

Concentration technology, Dr. Carbon, Jiuzun Energy. Ruiyang Group started in 2009 and is headquartered in Hangzhou (Binjiang) National High-tech Zone. After years of hard work, it has gradually formed four green main businesses: ecological environment, cultural tourism, modern agriculture and low-carbon energy. The group includes three listed companies: Concentration Technology, Carbon Doctor and Jiuzun Energy.