MULTI-FUNCTIONAL HIGH EFFICIENCY WATERPROOF MATERIAL anti-permeability, anti-cracking, tasteless, non-toxic, environm MULTI-FUNCTIONAL HIGH EFFICIENCY WATERPROOF MATERIAL1.Waterproof ... non-chlorine salt, dont corrosive to steel ;3.Have performance like enhancement, frost resistance, micro-expansion, water-reducing ... in favor of pumping construction. MULTI-FUNCTIONAL HIGH EFFICIENCY WATERPROOF MATERIAL