| http://www.w3.org/ns/prov#value | - Widely varying types of polymeric material are suitable in providing these non-toxic, drug-permeable properties, for example polysiloxanes, polyurethane, polyethylene, ethylene-vinyl acetate copolymers, cellulose, copolymers of polystyrene, polyacrylates and various types of polyamides and polyesters.
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