Product mechanism The reaction mechanism of Weigu 929 is that the NCO end group of the PUP touches air or the tidal air of the basement layer that they solidify into films, it can construct in moist base course and complicated projects. There will be a seamless, strong bonding, stretchy and tough waterproof film. Product features 1.One-component packaging, it can be used once opening. 2.Reliable performance. 3.Environment friendly: accord with the harmful substances stander GB 50325-2001 4.Complex use with high polymer membrane, self-adhesive polymer modified-bitumen waterproof membrane. Applicable scope Non-exposed roof, underground waterproofing, kitchen & bath and non-drinking water project