Research and development of friction welding special welding technology; research and development and manufacturing of new lightweight and environmentally friendly materials for aviation, aerospace, ships, automobiles, and motorcycles; technology development, technical consulting, and technical services in the field of building materials and machinery and equipment; friction welding processing; friction welding equipment, and automobile parts Manufacturing and sales of parts; manufacturing of earthquake-proof and disaster-reducing devices for civil engineering structures; research and development and processing of earthquake-resistant tie bars; survey, design, construction, and consulting of construction projects; installation and maintenance of mechanical equipment; manufacturing and sales of mechanical equipment; intellectual property agency; technology import and export, and goods import and export.