Environmental consulting services for general projects; Research and development of unconventional water source utilization technology; Resource recycling service technical consultation; Sales of new catalytic materials and additives; Special equipment repair; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Engineering Management Services; Sales of distribution switch control equipment; R&D of distribution switch control equipment; Distribution switch control equipment manufacturing; New material technology research and development; Manufacturing of special equipment for environmental protection; Sales of special equipment for environmental protection; Sales of special instruments for environmental monitoring; Manufacturing of special instruments for environmental monitoring; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); Foreign contracting projects; Undertake the engineering construction business of the head office; Wastewater treatment and recycling; Water Resource Management; Water pollution control; Water conservancy related consulting services; Architectural decoration、 Manufacturing of plumbing pipe parts and other metal products for construction; Water environment pollution prevention and control services; Manufacturing of special machinery and equipment for water resources; Sales of water pollutant monitoring and detection instruments; Environmental sanitation management( Excluding environmental quality monitoring, Pollution source inspection, Municipal solid waste、 Construction waste、 Food waste disposal services); Hardware product manufacturing; Hardware wholesale; Hardware product research and development; Manufacturing of metal parts for construction; Sales of metal parts for construction; Hardware product retail; Building materials sales; Atmospheric pollution prevention and control services; Air pollution control; Environmental protection monitoring; Air pollution monitoring and detection instrument manufacturing; Sales of air pollution monitoring and detection instruments; Sales of ecological and environmental materials; Ecological and environmental material manufacturing; Electrical equipment repair; Sales of electrical signal equipment; Mechanical and electrical equipment sales; Mechanical and electrical equipment manufacturing; Electrical equipment sales; Motor and control system research and development;Sales of electrical instruments and meters; Electrical instrument manufacturing; Sales of building decoration materials; Construction machinery sales; Manufacturing of new building materials( No hazardous chemicals); Metal structure manufacturing; Paint sales( No hazardous chemicals); Information system integration services; Lighting sales; Lighting fixture sales; Display device sales; Information technology consulting services; Information consulting services( No licensing information consulting services); Machinery and equipment sales; General mechanical equipment installation services; Construction machinery and equipment rental; Solid waste management; Instrument Manufacturing; Instrument sales; Sales of labor protection products; Manufacturing of building waterproof membrane products; Sales of building waterproofing membrane products; Special machinery manufacturing for building materials production; Sales of experimental analysis instruments; Indoor air pollution control; Furniture installation and repair services; Anti-corrosion material sales; Information system operation and maintenance services; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Manufacturing of special instruments for agriculture, forestry, animal husbandry and fishery; Sales of special instruments for agriculture, forestry, animal husbandry and fishery; Agricultural machinery services; Agricultural machinery rental;Agricultural machinery manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Agriculture、 Forest、 Mu、 vice、 Sales of specialized fishing machinery; Daily necessities sales; Wholesale of daily necessities; Daily necessities sales; Fishery machinery manufacturing; Metal tool sales; Metal material sales; Metal structure sales; Sales of metal packaging containers and materials; Seal manufacturing; Valves and plugs sales; Metal cutting and welding equipment sales; Sales of hydraulic power machinery and components; Metal forming machine tool sales; Animal Husbandry Machinery Manufacturing; Livestock machinery sales; Fishing machinery sales; Agricultural machinery sales; Machinery and equipment rental; Construction machinery manufacturing。