Manufacturing of special machinery for the production of building materials. Aluminum alloy products; Louver production and sales; Manufacture of special equipment for environmental protection. Production, processing, manufacturing, sales and installation: Environmental protection purification equipment, environmental protection acid mist treatment equipment, environmental protection desulfurization and denitrification equipment, environmental protection electrostatic precipitator equipment, cable trough, cable pipe, winding pipe, cable protection pipe, pulded profile products, winding products, molded products, molds, valves, filters, cooling towers and accessories, fan ducts, carat pipes, transmission pipelines, water tanks, distribution cabinets, distribution boxes non-metallic meter boxes and accessories, refrigeration equipment, purification air conditioning, precision air conditioning, computer room air conditioning and accessories, fume hood, Wind and dust suppression wall, water treatment equipment and construction, anti-corrosion and thermal insulation construction, signs, anti-glare plates, stainless steel water tanks, central air conditioning and terminal products, ventilation equipment and accessories, railway equipment and accessories, solid waste and water treatment equipment, acid mist purifiers, spray layers, septic tanks, power equipment and accessories, FRP products, bridges, brackets, sign piles, ground signs, warning signs, geographical warning tapes, gas fittings, rubber and plastic supporting products, plastic supporting products, stainless steel supporting products, metal supporting products, anti-corrosion lining, Sales of desulfurization dust collectors, pipelines and equipment installation, ancillary, mechanical equipment, hardware products and electronic products.