Rubber bladder: Material inner layer of highly airtight material, high-strength aramid fiber reinforcing materials material, the outer covering of rubber with anti-aging and ozone-resistant rubber material. Pneumatic rubber coat and rubber dam dam are used to operate the airbag, since the material and performance is completely different, so their life is also quite different. Pneumatic rubber dam shield airbag combination of inner, middle and outer layer made of an inner layer of polyester fiber reinforced synthetic rubber, synthetic rubber, middle rubber monomer, the outer layer of anti-UV ozone rubber mixture. By studying the comparison between both material or physical and mechanical properties are quite different, so the rubber dam dam bag can not replace air balloon shield gate. From flexible, reliable operation, life and other considerations, still use the gas shield gate airbags.