Production, sales and leasing: scaffold and accessories, upper and lower brackets and caps; Processing: T-shaped steel, angle steel, steel structure, round steel, strip steel; Indoor and outdoor decoration; Construction of movable plank house; Earthwork construction; Construction of building waterproof works; General contracting of construction; Construction labor subcontracting; Construction Engineering Survey and design; Construction cost consultation; Construction project bidding agency; Undertake exhibition and conference services; Development, transfer and consultation of network technology; Lease: construction machinery and equipment; Sales: mechanical equipment, galvanized steel pipe, building materials, metal materials