... , punched without defromaition, can be recycled to use as partition wall. 2. Fire proof, water proof, aging-proof, ... , cement, panels and other materials strongly.Cost saving:5. Save large quantity of concrete iron, reduce building ... /m2 Bending failue load 0.75 KM 6.5 KM Resist impact strengh(30kg sand bag) 3 ... 20 times cycles Acid and alkali proof In 5%HCLliquid soaking 24 hoursNo change by soaking 30 ...