Industrial Internet data services; data processing services; design, manufacturing, and installation: painting equipment, HVAC equipment, electrical appliances, electrical containers, three-waste treatment, environmental protection equipment, non-standard equipment, non-standard parts, steel structure engineering, transportation equipment, pipelines, liquid and gas purification equipment; contracting of complete production lines and projects (if national laws and regulations have special provisions, these shall be handled in accordance with the regulations); general public, Equipment installation for civil construction projects; sales: building materials, decorative materials, chemical products and raw materials (all excluding hazardous chemicals), auto parts, motorcycles and accessories, steel, environmental protection equipment, non-standard parts, electrical containers; anti-corrosion of construction engineering equipment; import and export of goods (those prohibited by laws and regulations are not allowed to operate, and projects restricted by laws and regulations must obtain a license)*.