According to enterprise data, Chongqing Tongnan Water (Group) Co., Ltd. was established on 20 17- 12-27, and its business scope includes licensing matters: production and supply of tap water; Construction and maintenance of urban and rural water supply and drainage system facilities and urban and rural water supply and drainage projects. (Projects subject to approval according to law can only be operated after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses of relevant departments. General projects: water supply and drainage engineering design and technical consulting services, river cleaning and drifting in the area (except for projects that need to be approved according to law, business activities can be independently carried out according to law with business licenses).