| http://www.w3.org/ns/prov#value | - As an insulating substrate, there may be conventionally be used films or sheets of synthetic resins, including polyesters, polyethylene, polycarbonate, cellulose acetate, polypropylene, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamides. etc., glass, ceramics and so on.
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