成年日本片黄网站色大全免费

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        PVC shutter product introduction.

        Addtime:2016/5/25 22:09:47

        A, adjust the light, ventilation - through the adjustment of the leaves, you can block or introduce outdoor light into the room; through the adjustment of the leaves, you can ensure indoor ventilation, so that the air in the room is fresh and cool.
        B. Insulation and Energy Saving - In winter, indoor warm air is prevented from flowing to the outside and the effect of air-conditioning heating is enhanced. In the summer, direct sunlight is blocked and the air-conditioning effect of cold air is enhanced.
        C. Eye protection - By adjusting the angle of the leaf surface, it is possible to block the sight from the top or bottom.
        D. Sound Insulation, Anti-ultraviolet Radiation - Compared with ordinary curtains, PVC blinds have good sound insulation; in summer, they can block more than 95% of ultraviolet rays.

        成年日本片黄网站色大全免费
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