... ceilingThis kind of partition has wide fuction ncludes,fireproof,sound insulation heat perservation and quakeproof.plan gypsum ... connected on the backstop.1) fuction:sound insulation,heatpersevation,fireproof and quakeproofBending gypsum board ceiling1) the beding gupsum ... in hospital,shool,factory3)Sound ,insulation,heat preservatiion,fireproof. PVC ceiling tiles:Size(mm):600*600 595*595 ...