prov:value
| - Rigid and semi-rigid plastics as defined above that are capable of being rendered dimensionally-recoverable and are therefore suitable for forming the tube include polyolefins, for example, low or high density polyethylene, polypropylene, ethylene copolymers, for example with propylene, butene, vinyl acetate or ethyl acrylate, polyesters, polyether sulphones, polyphenylene oxide, polyvinyl chlorid
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