EVA,ECB waterproof membrane is made by the copolymer of ethylene--vinyl acetate, the copolymer of ethlene--vinyl acetate and asphlt and polyethlene. Meanwhile, the material of waterproof roll is mixed with antioxygen, age resisiter and other assistants that can be made through coextrusion and rolling.

1, EVA waterproof has the advantages of low coefficient of permeability, uniform thickness, good flexibility, high obdurability, good transparence,good elongation and good tolerance in low temperature.

2,ECB waterproof roll has the advantages of good flexibility, good tolerance in low temperature, good elasticity, good stress crack resistance, small specific density, which are the suitable material for the inlayer of vault

ECB is applicabe to the various construction joints, waterproof of the tunnel liningand undergroud construction. It is also can be used alone as the drainning of blind drain. Meanwhile, it is very easy to be constructed, reduce the intensity of labor, save the raw material and so on.