Pyridine sulfur trioxide

General projects: biochemical product technology research and development; medical research and experimental development; new material technology research and development; technical services, technology development, technology consultation, technology exchange, technology transfer, technology promotion; Engineering and technology research and experimental development; bio-based material technology research and development; biological pesticide technology research and development; bio-based material polymerization technology research and development; special chemical product sales (excluding hazardous chemicals); new catalytic materials and additives sales; Sales of chemical products (excluding licensed chemical products); sales of instruments and meters; sales of experimental analytical instruments; sales of drug testing instruments; sales of Class I medical devices; sales of Class II medical devices; import and export of goods; import and export of technology.