... WATERPROOF MATERIAL anti-permeability, anti-cracking, tasteless, non-toxic, environm MULTI-FUNCTIONAL HIGH EFFICIENCY WATERPROOF MATERIAL1.Waterproof, anti-permeability, anti-cracking, tasteless ... , dont corrosive to steel ;3.Have performance like enhancement, frost resistance, micro-expansion, water-reducing, plastic-keeping 4.Low-coagulating, shrinkage ...