Scope of business Hardware and electrical machinery, building materials, cement, wood, plumbing fittings, fire-fighting equipment, lighting lamps, guardrail nets, wire mesh, auto parts, electronic digital products, environmental protection materials, thermal insulation materials, rubber and products, plastics and products, textile fibers and products, metal materials and products (except those limited by the state), non-metal materials and products, steel, yarn, asphalt, paper, glass. Sales and leasing of construction machinery and equipment; Self-supporting and acting as an agent for the import and export of various commodities and technologies (except for commodities and technologies restricted or prohibited by the state). (Projects that are subject to approval according to law can only carry out business activities after being approved by relevant departments)