A ye thiin koor ye cɔl polyethylene tunnel escape pipeline material, a ye thiin koor ye cɔl polyethylene tunnel escape pipeline material, a ye thiin koor ye cɔl polyethylene tunnel escape pipeline material. Pipeline toughness good, resistance to impact strength high, instantly deformation when a strong external impact, absorbing a large amount of impact energy, then quickly recover the original shape, for road tunnel construction escape emergency rescue provides a very safe and reliable guarantee. Pipeline toughness good, resistance to impact strength high, instantly deformation when a strong external impact, absorbing a large amount of impact energy, then quickly recover the original shape, for road tunnel construction escape emergency rescue provides a very safe and reliable guarantee. Pipeline ring is high rigidity, good resistance to pressure, not easy to deform, when the road tunnel construction occurs collapse, the pressure bearing capacity and resistance to environmental destruction far exceeds the general pipeline. Transportation sector uses new materials (ultra-high molecular weight polyethylene) on highways (Transportation sector uses new materials (ultra-high molecular weight polyethylene) on highways) (Transportation sector uses new materials (ultra-high molecular weight polyethylene) on highways) A looi tɛ̈n yenë yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen Në ye mɛn, tɛ̈n yenë yen tɛ̈n yenë yen tɛ̈n yenë yen tɛ̈n yenë yen tɛ̈n yenë yen tɛ̈n yenë yen tɛ̈n yenë yen tɛ̈n yenë yen tɛ A yic, a yic a yic. A laban, ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka tɛmɛ ka