We are large and experienced ceiling factory in china, adopting advanced technoligial process to produce high quality mineral wool boards. technological process: stir crushed injection, forming dehydration, drying high temperature sterilization, cutting-molding sand, spray the surface environment, ball molding, quality packing sepositing. mineral wool ceiling boards: 1.excellent acoustic properties (0.5~0.6) 2.high light reflectance(90%) 3. fine surface, beautifull visual effects 4.paticularly strong anti-scrape properties 5.high surablity, easy to install. maintain 6.environment-friendly specification: 3) length: 300, 600, 1,200mm 4) width: 300, 600mm 5) thickness: 6.8 - 22mm if interested, pls feel free to contact us. looking forward to your early reply. b.rgds sarra yue salse manager amosizhuang decorative material co., ltd www.amosizhuang.net email:yuehuijing801@amosizhuang.net sarrayhj@hotmail.com tel/fax:+86(311)87760717/84420618 ph:+86-15032683975