wholesale、 retail: Thermal transfer ribbon, Office automation equipment, Mechanical equipment, Printing machinery and accessories, Electronics(Except electronic publications), office supplies, Computer supplies, Composite materials,PET film, Packaging materials, food additives, Chemical products and chemical raw materials( Does not contain hazardous chemicals and precursor chemicals); Import and export of goods( law、 Except for projects prohibited by administrative regulations, law、 Projects restricted by administrative regulations may only be operated after obtaining a license)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)