General projects: Chemical product production (excluding licensed chemical products); chemical product sales (excluding licensed chemical products); plastic products manufacturing; plastic products sales; synthetic materials manufacturing (excluding hazardous chemicals); special chemical product manufacturing (excluding hazardous chemicals); biochemical product technology research and development; high-performance fiber and composite materials sales; 3D printing basic materials sales; engineering plastics and synthetic resins sales; high-performance sealing materials sales; new membrane materials sales; high quality synthetic rubber sales; industrial control computer and system sales; engineering and technology Research and experimental development; technical services, technology development, technical consulting, technology exchange, technology transfer, technology promotion; new material technology promotion services (except for projects subject to approval according to law, independently carry out business activities according to law with a business license) Permit projects: inspection and testing services; import and export of goods (items subject to approval according to law, business activities can only be carried out after approval by relevant departments. Specific business projects are subject to approval by the relevant departments)