... .can be constructed on the wet base surface,especially adapting to the waterproof of rainy areas.3. excellent Cohesiveness. It ... , dam, sewage treatment plant,Classification1. according to shape: ring tape, F, T,U,L E tape2. according to materil: EPDM , neoprene, natural rubber ... be used if it beyond the expiry time while it’s tested qualified.Construction1. Construction temperature should be above 5 ...