Processing of refrigeration equipment, auto parts, motorcycle parts, mechanical equipment and accessories (the above are all except special equipment and other products involving special licenses) (limited to branch operations), installation and maintenance of refrigeration equipment (except special items), sales of refrigeration equipment, mechanical equipment and accessories, auto parts, motorcycle parts, plastic products, office supplies, business information consultation (except brokerage), and import and export of goods and technology. [Projects that require approval according to law can only be carried out with approval from relevant departments]