It means we can save a lot of space -- up to 1/3 of a building. Arno Schlüter More Quotes by Arno Schlüter More Quotes From Arno Schlüter Up to 60% of Singapore's electricity is for buildings. Arno Schlüter world Singapore is a noisy city due to all the [cooling] units on the wall. Arno Schlüter world
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