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General projects: technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; sales of chemical products (excluding licensed chemical products); sales of special chemical products (excluding hazardous chemicals); construction waterproofing membrane products Sales; sales of electrical equipment; sales of building materials; sales of agricultural and sideline products; sales of chemical fertilizers; sales of food additives; retail of hardware products; sales of rubber products; sales of metal products; sales of machinery and equipment; sales of instruments and meters. (Except for projects that require approval according to law, business activities can be carried out independently with a business license and in accordance with the law) Licensed projects: Hazardous chemical operations. (Projects that require approval according to law can only be carried out with the approval of relevant departments. Specific business projects shall be subject to the approval documents or licenses of relevant departments)