MSDS report 25kg/barrel color: black, green, red, yellow,etc. manufacturer of waterproof coating, good quality,cheapest price ... Thick coating,dense coating,no pinhole,no air bubble.5,Without benzene solvent,coal tar constituents, will not pollute the environment ... groove.Construction guides1, Waterproof base shall be clean,smooth,strong and without oil,water.2, Through-wall pipe shall be sealed first ...