(Image found from http://thegoat.backcountry.com/2010/07/08/fallback-jobs-for-rock-climbers-window-cleaner/) Cleaning windows can be dangerous no matter how many floors the building has. Having workers standing outside of the building on a platform is not very face, but it used to be the only way possible to clean windows—that is the only way until now. Thanks to Sky Pro, cleaning building windows doesn’t have to...
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