Production of disinfection equipment; sales of disinfection equipment; general construction projects: technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; instrument manufacturing; instrument sales; furniture manufacturing; daily necessities sales; rubber product manufacturing; rubber product sales; metal material manufacturing; gold Sales of materials; sales of machinery and equipment; software development; light pollution control services; instrument repair; air pollution control; water pollution control; sales of special equipment for environmental protection; noise and vibration control services; technology import and export; import and export of goods; import and export agents; manufacturing of special equipment for environmental protection; gas, liquid separation and Sales of purification equipment; manufacturing of gas and liquid separation and purification equipment; environmental consulting services; water environment pollution prevention and control services; sales of water quality pollutant monitoring and detection instruments; sewage treatment and recycling; sales of special chemical products (excluding hazardous chemicals); sales of special instruments and meters for environmental monitoring; glass fiber reinforcement Sales of plastic products; sales of special electronic equipment; sales of direct drinking water equipment; retail of hardware products; sales of mechanical parts and components; sales of household appliances; sales of household appliance spare parts; household appliance installation services; repair of daily appliances; sales of electronic products; retail of daily household appliances; sales of mechanical and electrical equipment; sales of plastic products