Features: (1) sound absorption rate (2) good heat insulation (3) flame retardant grade B1 level (4) compact, stable shape. (5) is very light weight, safe and convenient construction (6) harmless, environmental pollution, odorless (7) Water, water flooding back strong acoustic performance does not drop, the same shape. (8) can be secondary use, easy to destroy, no secondary pollution to the environment. (9) the melting point of 250 degrees (Celsius) is mainly used for: home theater, KTV, opera, theater, recording studio, recording studio, studio, audition room, radio, business office, function rooms, conference rooms, studio hall, concert hall, auditorium, gymnasium, entertainment city, hotel, villas, home life meeting rooms, highway noise and sound absorbing wall and so need a place