GreenTech Environmental Co., Ltd. (688466.SS) engages in advanced water treatment and wastewater resource reclamation projects primarily in the People's Republic of China. Founded in 2004 and headquartered in Beijing, the company provides full-lifecycle solutions encompassing engineering, procurement, construction, operation, management, and financing services for wastewater treatment and upgradation, water reuse, waste-to-resources conversion, and water environment governance using membrane technologies; core products include the “Radish” AI intelligent operation and management platform, intelligent water purification units such as the new water island, and process packages for sewage and wastewater recycling as well as advanced drinking water treatment; additional offerings cover seawater desalination, collection and utilization of rainwater, brackish water and mine water, unconventional water source technologies, resource recycling consulting, environmental emergency services, intelligent water systems, artificial intelligence applications, and special environmental protection equipment manufacturing and sales. The company serves municipal, industrial, and utility sectors with approximately 423 employees and operates through subsidiaries such as Greentech Xinha (Tangshan) Wastewater Recycling Co., Ltd. Recent developments include receipt of a CNY 50 million central government subsidy by its subsidiary for the Wastewater Resource Utilization Project in Tangshan City's South Fortress Economic Development Zone; a December 2024 strategic cooperation agreement with Hunan Aerospace Environmental Protection Industry Fund Management Co., Ltd. to participate as a limited partner in a membrane materials fund managed by Peking Hangke Junfu Private Fund Management Center (Limited Partnership), advancing its global strategy and industrial ecological layout; and a July 2024 transaction where a buyer group acquired an additional 4.87% stake from Victorious Joy Water Services Limited for CNY 92.4 million.