General items: Sales of material handling equipment; Sales of construction machinery; Sales of agricultural machinery; Sales of mining machinery; Sales of animal husbandry machinery; Sales of amusement equipment in ordinary open-air amusement parks; Sales of special equipment for environmental protection; Sales of machinery parts and components; Import and export of goods; Import and export of technology (except for projects that require approval according to law, business activities can be carried out independently in accordance with the law with a business license)