吸音天花板

soundproof ceiling feature:1) Fire Performance: Meet GB8624-1997 Class B1 2) Asbestos Free 3) Formaldehyde Free 4) Fiber content: >=90% 5) Color of Surface: White 6) Noise Reduction Coefficient: Nrc 0.4 - 0.6 Depending On The Pattern And The Thickness 7) Light Reflectivity: More Than 85% 8) RH: >= 75% 9) sound absorption: EN20140-1994 10) Standard Thickness: 12mm, 14mm, 15mm, 18mm, 20mm 11) Standard Dimensions: (300)600*600(1200/1800), 595*595, 595*1195, 603*603 12) edge details: flat,tregular, concealed and shiplap 13) water content:


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