●Metal accoustic ceilings are aicial functional acoustic solutions.Noiseis absorbed when the sounds are directed to specific zones.thus，thecharacteristics of the metal panel to influence the acoustic ability and featurein an indoors pace, in order to meet any specific expectations.
●For sound absorption, the propagation of sounds is absorbed by convertingsound energy into thermal energy. Materials with sound-absorbing propertiesare called sound-absorbing materials.Be shown in Fig. 1
●ln practice,perforated ceiling made of metal,wood, plastic or gypsum andprovided with a porous sound-absorbing materia Kthickness is 40mm) on theback are used for absorption of air-borne noises.Be shawn in Fig. 2