Import and export of goods、 Technology import and export( State Law、 Except for items prohibited by administrative regulations, law、 Projects restricted by administrative regulations may only be operated after obtaining a license); wholesale、 retail: Instruments, Mechanical and electrical equipment( Except cars), Metal materials, Building Materials, Chemical products( Removal of hazardous chemicals and precursor chemicals), Hardware and Electrical, Communication equipment( Except for special control), photographic equipment, Electronic computers and accessories, Office automation equipment; Serve:Computers and accessories、 Technical consulting for office automation equipment, Instrument maintenance; All other legal projects that do not require approval。