Jiangsu Yihuan Group Co., Ltd. (hereafter for short: Yihuan), Yixing No. 1 environment prevention equipment factory was founded in 1976; "Yihuan" is the earliest specialized environmental pollution prevention equipment factory. There are three holding subsidiaries: One wholly-owned enterprise, one joint venture, two branches and seven professional production, operation and management departments.

Design, office, Business and living space is 25500 square meters). Total registered capital is 165 million (Group company is 118 million), over 800 staff, in which 80% of them are scientific and technological personnel, they are all trained systematically and professionally. There are also many domestic and foreign experienced experts working in yihuan for science and technology R&D.

Yihuan Group is a limited liability company. Mainly deals in manufacture, installation, construction of environment pollution prevention equipments, fountain system, mechanical and electrical equipments, fiberglass reinforced plastic products, the manufacture of whole plastic, steel chemical industrial equipments, the research, design of all kinds of scientific and technical products, microorganism culture production and sale, technical consultation service, home trade and international trade affairs. Yihuan provides one-stop service combines EP products research, development, design, technical consultation service, manufacturing, government projects construction and equipment installation services.

"Yihuan" already has the certification of ISO (U. K. UKAS) 9001. ISO14001, OHSAS18001, and "Yihuan" also has the operating and management rights of environmental protection facilities awarded by nation; Special management right of environmental protection engineering projects awarded by nation; Self-management import and export right awarded by nation; Gained manufacturing license of water industrial products awarded by National Technology Supervising Administration. "Yihuan" is the designated enterprise in producing national environmental protection equipments, National Technical Standards Demonstration Enterprise of Wuxi city, the managing director unit of China Environmental Protection Industry Association, the vice-direct unit of China Environmental Protection Machinery Industry Association, the member of Construction Industry Sub-Council of China Council for the Promotion of International Trade and Construction Industry Commerce Chamber of China Chamber of International Commerce, also the member of China Petroleum & Petrochemical Equipment Industry Association, Jiangsu Province Environmental Product Association vice-director Unit, the member of Fiberglass Reinforced Plastic Industry Association of China.

To meet the new situation that China became a member of WTO, "Yihuan" has established business relation and connection with more than ten countries from American, Europe, Southeast Asia, Middle East etc. We are exclusive distributor of membrane tube diffusers of OTT GmbH, Japan Hitachi Plant technologies, Ltd., Sparotor (Self-absorption type screw aerator) China specialized sales agency. We have brought in some advanced technologies and management experience from aboard; Built a strong foundation for involving in large sized wastewater treatment engineering projects and international competition.