Metal structure manufacturing; Metal tool manufacturing; Hardware product manufacturing; Metal cutting processing services; Hand cart and livestock traction vehicle manufacturing; Metal structure sales; Metal tool sales; Hardware product wholesale; Hand cart and livestock traction vehicle sales; Plastic product sales; Refrigeration and air conditioning equipment sales; Lighting fixture sales; Lighting appliance sales; Daily-use wooden product sales; Home furnishing product sales; Home furnishing product manufacturing; Electronic product sales; Internet sales (excluding products requiring sales permits); Mechanical equipment sales; Metal material sales; Domestic trade agency; Import and export of goods; Technology import and export.