We specialize in PIR Pre-insulated Duct Panels for several years, with good quality and pretty competitive price.Advantages: safety and fireproofing, light quantity and nice appearance, energy-saving, low carbon, anti-bacteria, moisture-insulating and sound-insulating, fast installation, stable physical property, as well as high heat-preserving, high intensity, corrosion-resistant, no formaldehyde, no air leak, no condensed water, maintenance-free, and long life-span etc. Its thermal conductivity coefficiency is the lowest among the world, twice than that of glass wool.Quality Commitment: Thermal conductivity coefficiency can keep stable for 22 years, and lifespan can last 80 years.