prov:value
| - The second and/or fourth layer can be made of the following materials: metal oxide, metal nitrite, metal carbide, particularly of silicon oxide, silicon nitrite, tin oxide, tin nitrite, aluminum oxide, aluminum nitrite or polymers, in particular polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyurethane (PUR), polyimide (PI), polystyrene (PS), polyethylene terephthalate (PET) or polym
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