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PDLC smart filmElectrical Smart Switchable glass is composed with one liquid crystal sheet solidified(calls pdlc film) and double tempering glass under high-pressure & high-temperature.The theory of Smart Switchable film:    On natural condition, the arrangement of the liquid crystal inside the glass is Irregular the refractive index of liquid crystal is lower than the polymer outside, incident light scatters on the polymer, which is milk-white, means opaque. When power on, the liquid drop of the polymer with liquid crystal dispersion will rearrange, the liquid crystal will become Irregular ar