Environmental protection consulting services; Resource recycling technology research and development; Unconventional water source utilization technology research and development; Resource recycling service technology consulting; Environmental protection special equipment manufacturing; New catalytic material and auxiliary agent sales; Environmental protection special equipment sales; Technical services, technology development, technical consultation, technical exchange, technology transfer, and technology promotion; New material technology research and development; Sewage treatment and recycling; Special chemical product sales (excluding licensed chemical products); Engineering and technology research and experimental development; Water environmental pollution prevention services; Water pollution control; Agricultural non-point source and heavy metal pollution prevention technical services; Chemical product sales (excluding licensed chemical products); Mechanical equipment sales; Instrument and meter sales; Supply application instrument and meter sales; Smart instrument and meter sales; Goods import and export; Solid waste treatment; Mechanical and electrical equipment sales; Glass fiber reinforced plastic product sales; Technology import and export; Conference and exhibition services; Hardware product wholesale; Hardware product retail; Wire and cable operations; Emerging energy technology research and development; Atmospheric environmental pollution prevention services; Biochemical product technology research and development; Environmental emergency technical equipment sales; Environmental emergency technical equipment manufacturing; Petroleum product sales (excluding hazardous chemicals); Bio-based material sales; Road freight transport of general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); Port tallying; Special equipment sales; Building material sales; Ecological environment material sales; Ecological environment material manufacturing; Terminal metering equipment sales; Glass fiber and product sales; Glass instrument sales; Coal and product sales; Refractory material sales; Mechanical equipment research and development; Chemical product production (excluding licensed chemical products); Special chemical product manufacturing (excluding hazardous chemicals); Electrical equipment sales