MULTI-FUNCTIONAL HIGH EFFICIENCY WATERPROOF MATERIAL anti-permeability, anti-cracking, tasteless, non-toxic, environm MULTI-FUNCTIONAL ... -chlorine salt, dont corrosive to steel ;3.Have performance like enhancement, frost resistance, micro-expansion, water-reducing, plastic-keeping 4.Low ... , in favor of pumping construction. MULTI-FUNCTIONAL HIGH EFFICIENCY WATERPROOF MATERIAL