The potassium salt mine of Zhongliao Mining Co., Ltd. in the Tongmang mining area of Laos is located in the southwest of the Tongmang mining area, under the jurisdiction of Tongmang Village, Saitani County, Vientiane City, Laos. The mining area is about 20km away from Vientiane City. The water source of Nan'e River is close to the industrial site, with good water quality. Due to the water resource regulation function of Nan'e Lake in the upper reaches of Nan'e River, the water level of Nan'e River can still reach 6.8m during the dry season, and the water volume is abundant, which can meet the domestic and production water requirements of this mine and supporting beneficiation plant.

A new purified water treatment station will be built in this project, which will be contracted and constructed by our company. The designed treatment capacity is 500m ³/h, and the treated water will be reused for daily living water and underground equipment cleaning. Considering the good water quality of the water source, the water quality requirements for production water such as mineral processing are not high, and pre-treatment devices are installed at the water intake point of the water source. The production fire water in this site is directly supplied to production, fire water, and underground dust and fire water through the production fire booster pump. The outlet pipeline is equipped with filtration measures to prevent sediment deposition and blockage.