EPS composite panels are made using self-extinguishing foam sandwich materials, compounded by the specific production process insulated sandwich panels. The core material is divided into polystyrene foam, polyurethane, rock wool and the like. Whether it is the kind of sandwich panel has a "triple play" features work together. Color coated steel has high strength, waterproof, anti-corrosion good, bright color, etc., foam and light weight, excellent insulation properties, but also bear certain shear. Therefore sandwich construction for large span roofs are ideal building materials. Light weight: 10-14 kg / m, equivalent to a brick wall 1/30. Insulation: thermal conductivity: λ0.035w / mk. High strength: for building envelope, bearing structure, bending compression; general house without pillars. Bright color: no surface decoration, color galvanized steel coating retention in 15--30 years. Fast and flexible installation: construction period can be shortened by more than 40% oxygen index: (OI) 34.0 (Province Fire product quality inspection stations) limit temperature: -50 ℃ - + 120 ℃ The products are widely used: ⊙ purification plant ceiling, and envelope purification products; ⊙ construction of villas, industrial plants, warehouses; ⊙ refrigerator, air conditioning system; ⊙ original building in floor room; ⊙ large-span roof over timber.