1.100% environmentally friendly, 100% recyclable; 2. acoustic rate, good noise performance, sound-absorbing cotton polyester fiber is a porous material, it can make the sound by a special high-density tissue fibers form a reflux in its cavity, effectively implement sound insulating function; 3. insulation performance, energy savings for consumers; 4. easy processing, can be used a utility knife or scissors to cut into any desired shape; 5. Long life; 6. mildew can against a variety of microorganisms, fungi, acids, salts and hydrocarbons corrosion; 7. odorless, free of formaldehyde, harmful to humans, after many experiments demonstrated that direct skin contact without any allergies, environmental pollution; 8 waterproof, water-flooding back strong, sound-absorbing performance does not drop, the same shape; 9. lightweight construction safety side