... big 2,does not absorb water 3.the rubber product service life to be long extrusion strip :,the flexibility intensity is ... and detailed, good elasticity, good foam evenly, waterproof performance of first-class, anti-ozone, anti-aging, bears the resolver performance to be ... temperature +80~-45 flow, not to distort, the embrittlement, the service life to be long.Has the independent opening bubble structure ...