According to the enterprise data, Zhangjiakou Chongli District Huanjing Ecological Development Co., Ltd. was established on 2017-1-09, and its business scope includes mine acquisition and restoration and ecological management. Water ecological restoration; Desertification restoration; Restoration and development of saline-alkali land (including degraded forest and reserve forest); Eco-agricultural industrialization development; Ecological forestry development; Developing ecological aquaculture; Eco-tourism development; Sewage ditch treatment; Reclamation and management of low hilly land; Comprehensive management of river basins; Wetland construction, river greening, design, consultation and development; Infrastructure construction; Professional contracting of urban landscaping and garden ancient buildings; River sand mining production, operation and sales; R&D, production and sales of new building materials and decorative materials; Research, development, production and sales of mortar; Processing, management and sales of tailings sand (associated ore), waste rock and slag; Recycling of renewable resources (excluding solid waste, hazardous waste, scrapped cars and other projects approved by relevant departments); Dregs engineering; Infrastructure earthwork; Removal and treatment of construction waste; Housing lease; Heating service. (Projects subject to approval according to law can only be operated after approval by relevant departments)