“Dayu Wuqing Model”, the company implemented the PPP project of the rural sewage treatment project in Wuqing District, Tianjin City, the largest monomer in the country in 2018, with a total investment of 1.592 billion yuan and a cooperation period of 15 years, including a construction period of 2 years and an operation period In 2013, 282 sewage treatment stations were newly built, with a sewage pipe network of 1,800 kilometers, with a designed daily sewage treatment capacity of 29,000 tons, serving 400,000 people and serving 301 villages.

On May 13, 2021, Wang Zhengpu, director of the National Rural Revitalization Bureau, inspected the “Wuqing Model” of rural domestic sewage treatment and gave a high evaluation.