General items: Sales of building decoration materials; Sales of building materials; Sales of daily wood products; Sales of electrical accessories; Retail of hardware products; Sales of metal accessories for construction; Sales of sanitary ceramic products; Sales of daily necessities; Sales of electrical facilities and equipment; Construction ceramics Sales of products; Sales of doors and windows; Sales of wires and cables; Sales of insulation materials; Sales of mechanical parts and components; Sales of construction waterproofing membrane products; Sales of distribution switch control equipment; Sales of fans and fans; Sales of metal products; Sales of lightweight building materials; Wholesale of hardware products; Sales of anti-corrosion materials; Sales of valves and cocks; Sales of dyes; Sales of cement products. (Except for projects that require approval according to law, business activities can be carried out independently with a business license and in accordance with the law)