Metal structure manufacturing; Metal structure sales; Weighing instrument manufacturing; Weighing instrument sales; Packaging special equipment manufacturing; Packaging special equipment sales; General equipment manufacturing (excluding special equipment manufacturing); General parts manufacturing; Mechanical equipment research and development; Mechanical equipment sales; Mechanical parts and parts processing; Mechanical parts and parts sales; General mechanical equipment installation services; Electronic components wholesale; Hardware product wholesale; Metal material sales sales; sales of building materials; wholesale of clothing and apparel; sales of knitted textiles and raw materials; wholesale of daily necessities; wholesale of cosmetics; sales of personal hygiene products; technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion; import and export of goods; technology import and export; manufacturing of auto parts and accessories; retail of auto parts; manufacturing of motorcycle parts; retail of motorcycles and parts; and wildlife protection.