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In the past, people uses many acoustic materials for absorb noises, especially like fiber glass.our aluminium ceiling tile uses a acoustic textile have features like considerable sound impedance and fire-proof performance.This kind of felt can get same sound impedance of a 50 mm fiberglass; morover it has very strong fire proof performance. It has passed the ramdom test of national fire-proof architectural material quality inspection, reached national standard GB8624-falme resistance grade B1.