Water resistance: sealing size structure, without water absorption, moisture-proof and high water-proof performance. Corrosion resistance: sea water, oil grease, acid, alkali and other chemical substances resistance, bacteria, poison, odor and pollution free. Processability: no joint, easy for thermal pressing, cutting, gelatinizing, joint and etc. Shock-proof: high resilience, anti-tension and flexibility, with sound shock-proof/cushion performance. Thermal insulation: superior thermal insulation against cold and insolating. Sound-proof: sealing size and superior sound-proof.