(1) very elastic and resilient;
(2) Appropriate mechanical strength, including expansion strength, elongation and compressive strength, etc.
(3) The characteristics are stable, it is not easy to swell in the substance, and the thermal shrinkage effect (Joule effect) is small.
(4) Easy production processing molding, and can maintain a precise size.
(5) no etch contact area, no pollution material, etc.
