Composite damping sound insulation upgrade≥27dB, a good cut off effect for the low-frequency sound. Super flexibility, adapt to any solid base material, the fusion material free from the shape, structure, space constraints. Double-sided super self-adhesive, fully integrated into the substrate surface; Easy and convenient construction, can be cut with wallpaper knife, scissors and other tools. Building sound insulation and substrate bonding back cover, machinery and equipment can use the metal sheet to permanently use by staples. Good fire resistance, temperature resistance, elasticity and tensile strength. No manufacturing emissions, no waste pollution, environmental protection and can be recycled several times.