... weight, high strength, fire-proof, water-proof, moisture-proof, decorative partition wall board 1.Green Environmental ProtectionThe products use natural plant fibers. It ... 36kg/-1/9th in weight of the traditional brick wall, the wall can effectively reduce weight .Thus the input of the ... 30kg sand bag) 3 times 500 times no crack Sound insulation 40dB 43dB Max fire resisitance A grade 60min 188 min ...