Engaged in technology development, technical consultation, technical service and technology transfer in the fields of information technology, electronic products, biotechnology, chemical products (excluding hazardous chemicals), building materials, machinery and equipment; Sales of electronic components, mechanical equipment, transportation equipment, electrical machinery, communication equipment, instruments and office machinery, automobiles and spare parts, hardware and electrical appliances, household appliances, computers, software and auxiliary equipment (Except for the items prohibited by laws, administrative regulations and decisions of the State Council,