APEL for the Japanese Mitsui Chemicals (MitsuiChemicals, Inc.) Use technologies developed by Ziegler polymerization of a cyclic olefin copolymer (cycloolefin copolymer, COC). The main chain of cyclic olefin copolymer structure with a huge fat ring system, APEL is amorphous and has a high glass transition temperature. Therefore, both APEL and amorphous polyolefin plastic nature of the two, from their unique properties. APEL provides excellent optical properties and gas tightness, which is unmatched by other resins. APEL is a new material, a transparent polymer to provide the necessary number of excellent properties