Manufacturing and sales of wooden doors, furniture, teaching equipment, and school supplies Manufacturing and sales of copper doors, stainless steel doors, aluminum doors, office appliances (excluding wood and bamboo products), electrical equipment, signs, sports and fitness equipment, garden tools, outdoor leisure products, automobile and motorcycle accessories (excluding engines), reflective products, enamel products, school uniforms, sanitary ware, plumbing equipment, and decorative materials (excluding wood and bamboo materials); sales of daily necessities (excluding dangerous goods) and non-ferrous metals (excluding hazardous chemicals); import and export of goods and technology