Why permanently shade windows at your workplace when you can have a choice to flip-flop the shades on your windows to automatically meter-in the natural sunlight into your office spaces!. In a research poll conducted by them, 47% of employees admit they feel tired or very tired from the absence of natural light or a window at their office and 43% report feeling gloomy because of the lack of “Natural” light. Auto Tint Films by ASPL darkens the window automatically when the sunshine is bright outside, Else remains clear when it’s a cloudy or dull day without blocking the clear views of the outdoors even during the night! (permanently tinted windows block the views completely)visit here. https://aspl.asia/electric-frost-film/