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Licensed project: Production of hazardous chemicals; Production of food additives; Inspection and testing services; Railway locomotive and vehicle maintenance. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to the approval documents or licenses of relevant departments.) General projects: Manufacturing of synthetic materials (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Advertising production; Advertising design and agency; Fire technology services; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Railway transportation auxiliary activities; Production of Class III non pharmaceutical precursor chemicals; Production of chemical products (excluding licensed chemical products). (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law)show moreLicensed project: Production of hazardous chemicals; Production of food additives; Inspection and testing services; Railway locomotive and vehicle maintenance. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to the approval documents or licenses of relevant departments.) General projects: Manufacturing of synthetic materials (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Advertising production; Advertising design and agency; Fire technology services; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Railway transportation auxiliary activities; Production of Class III non pharmaceutical precursor chemicals; Production of chemical products (excluding licensed chemical products). (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law)