Purification processing, manufacturing, sales of glass fiber reinforced plastic products, energy-saving equipment, sewage treatment equipment, dust removal equipment, conveyor accessories, glass steel coil products, cooling tower and fillers, central air conditioning products, rubber products, automation products, molded products, pipe products, containers, filters, anti-corrosion insulation engineering, steel structure, non-standard products, gas pressure regulator equipment, wire and cable, optical cable, cable, cable fittings, cable accessories, high and low voltage cabinet, power auxiliary equipment and accessories, construction installation.