abrasion-resistance,high resilience,high extensibility,high elasticity,wide range of hardness(A15 to D70,extensibility can be in Their characteristic as follows:abrasion-resistance,high resilience,high extensibility,high elasticity,wide range of hardness(A15 to D70,extensibility can be increased by 400 to 800 percent.)adn resistance to oil,acid,alkali,ray radiation as well.widely used as ...