... 2.Anti-seepage 3.Environmental 4.Free sample Tuwuyou 256 Water & Leak Proofing Grout Product features1.Snap Cure, Quick Sealing ... and leakage stoppage in underground buildings, structure foundations, conduit lines, water pools, lavatories, civil defense projects, metros and tunnels. Performance ... supposed to sealed and stored in a place dry, cool and ventilated.2.Under normal conditions of storage and ...