In 2015, Zhile invested more than 70 million yuan in the BOT project of the South-to-North Water Transfer Surface Water Plant in Wangdu County. The daily water treatment capacity is 25,000 square meters, covering an area of 15 acres and franchising for 30 years. It is the first surface water plant in the country that uses imported ultrafiltration membrane technology to ensure the safety of residents' water use and raise the water standards for residents. The project was officially opened in August 2017 and is fully automated.