... .Certificate:CE & ISO9001:2000 Mineral Fiber Ceiling Minerl Wool Board, Mineral Fiber Acoustic Ceiling,Mineral Fiber Ceiling Slab,False Ceiling,Artistic Ceiling,Fiber Ceiling,Ceiling Tiles,Ceiling ... Holes, Sand Blasted and Perforation Features: 1) Material: Wet formed mineral fiber 2) Surface: A variety of surface patterns available 3) Colour ...