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Optional viewing angle composite film for cigarette advertising boards
Optional viewing angle composite film for cigarette advertising boards
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机译:用于香烟广告板的可选视角复合膜
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摘要
The present invention has the effect of providing a half mirror layer, a privacy film (louver layer), and a linear prism layer inside a composite film to prevent cigarette advertisements from being identified outside of a store and outside a predetermined location.
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