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Rock wool sandwich Gypsum board is a new type board with many advantages compared to ordinary gypsum board; the main differences are shown as follows:Sandwich formsRock wool fiber space is 90°perpendicular to gypsum board, increasing the compression of the rock wool by 50%;StructureCombining the latest technology of bonding with the gypsum board and rock wool as a whole, greatly improving the impact and compressive strengthInstallation PatternAll components as a whole board; each panel is an assembled unit; quick and easy installation.Disassembly FeaturesFlexible combination,removable installation ,repeat usePhysical PropertiesFor board of 100mm thickness, air acoustic noise limit is 45 dB; Fire resistance over 1.5 hJoint PerformanceSlot joint; Stress-release ;Not cracking joints