Wastewater treatment projects、 Water purification project、 Design of solid waste and waste gas treatment projects、Install、 debug, Wastewater treatment equipment、 Water purification equipment、 Development of solid waste and waste gas treatment equipment、 Production、 Sale, Wastewater treatment、 Water treatment、 solid waste、 Technology development in the field of waste gas treatment、 Technical Consulting、 Technical Services、 Technology Transfer, Manufacturing of special equipment for environmental protection, Housing construction project, Water pollution control, Air pollution control, Flower planting, Self-operated and agency import and export business of general business items, commodities and technologies。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments) Licensed Projects: Various engineering construction activities; Construction Engineering Design; Professional construction work( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: Sales of special equipment for environmental protection; Specialty chemical product sales( No hazardous chemicals); Manufacturing of special instruments for environmental monitoring; Sales of special instruments for environmental monitoring; Sludge treatment equipment manufacturing; Coal-fired flue gas desulfurization and denitrification equipment manufacturing; Dust removal technology equipment manufacturing; Wastewater treatment and recycling;Soil pollution control and remediation services; Environmental consulting services; Engineering Management Services; Non-residential real estate rentals; Machinery and equipment rental( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)