... Building material can nail, sa Glass magnesium boards based on magnesium oxide, magnesium chloride, and water ternary system,made ... toxic, tasteless, non-polluting,green products;Excellent fire performance, water performance;Excellent non-hygroscopicity, non- ... 4Kg/cm3CMORcross1.76MpaLength wise21.5MpaWater absorption28.1Percentage of thermal0.9Soundproof index46DbFire proof limit160H/mPollution- ...