I hereby contact you to recommend a good quality PU adhesive sealant widely used in building, road, airport runway,and bridge construction. Our products are competitive in following aspects:1. Low modulus and high elasticity, good sealing and water-proof property.2. One component, convenient to apply, non-poisonous and odourless after curing, green and environment friendly.3. Bonding well with many substrates, no corrosion and pollution to substrates.