Dear Sir/Madam, Function:Sound-Absorbing,Waterproof,Fireproof,Moisture-Proof Feature:Perforated Ceilings Ceiling Tile Shape:Irregular Ceiling Tile Type:Metal Ceilings Name:perforated metal tile ceiling Plate thickness:0.1-3mm Mterial:aluminum hole shape:diamond and other special hole surface treatment:oxidation treatment certification:ISO9001-2008, HBQA, CNAS, CQGC, IAF Techinque:perforated advantage:abrasion resistance Specification:customized Material:Aluminum Wire Show More