General projects: sales of experimental analytical instruments; Sales of category I medical devices; Sales of category II medical devices; Instrument sales; Glass fiber reinforced plastic products sales; Technical services, technology development, technology consultation, technology exchange, technology transfer and technology popularization; Pump and vacuum equipment manufacturing; Sales of special chemical products (excluding dangerous chemicals); Gas and liquid separation and purification equipment manufacturing; Sales of chemical products (excluding licensed chemical products); Supply of instruments for sale; Electrical instrument sales; Intelligent instrument sales; Conference and Exhibition services; Import and export of goods; Technology import and export; Import and export agent. (Except for projects subject to approval according to law, independently carry out business activities according to law with business license)