A feature of the material or material in design, in a different form.Such as color changes with temperature. To design a pattern on the clothes with meaning. And create exotic feeling. There is a lovely, understand and easy access, friendly with those wearing suits as a gift or use.(by the past may be of this kind of color use, but can be as in function such as using a cushion cover layer from uncleanness. To change color after someone sitting just leave. Beer bottle or label paste of cooling).
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