Production and sales of technical research and development, technical consulting, technical services, and technology transfer in the field of mechanical equipment, mechanical parts, and mechanical equipment; sales of metal tools, measuring tools, cutting tools, hardware, electricity, electromechanical equipment, auto parts, motorcycle parts, and metal materials (excluding rare and precious metals); building materials, decorative materials, and chemical products (the above scope does not include hazardous chemicals), instruments and meters; business information consultation; import and export of goods, technology import and export, and service import and export. ***