Wancho Environmental Protection Co., Ltd. won the bid for the "BOT Project of Biannan Sewage Treatment Plant in Ma'anshan Modern Industrial Park, Suzhou" in November 2021. The company's wholly-owned subsidiary, Suzhou East Qinghe Water Affairs Co., Ltd., is responsible for the construction and operation of this project. The total designed sewage treatment capacity of the project is 60000 tons/day, which will be implemented in stages, with the first phase of 15000 tons/day and the second phase of 45000 tons/day.