Processing and sales: insulation film, electric melting sleeve, interface leather, heat shrink tape, sales: steel sleeve steel steam insulation pipe, polyethylene jacket pipe, galvanized iron sheet insulation pipe, steel pipe, pipeline anti-corrosion and insulation materials, polyurethane products, polyurethane composite materials, rock wool products, glass wool products, aluminum silicate products, rubber products, insulation materials, insulation material accessories, fireproof materials, sealing materials, anti-corrosion materials, waterproof materials, mechanical equipment, wires and cables, chemical products (excluding hazardous drugs)