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Home tightness Leak test is a test that determines the level of tightness of a building and detects leaks. The tightness of the house is one of the most important indicators of a high-quality and economical house and is directly related to the heating costs incurred in winter. Tightness test is currently the most modern and accurate way to detect construction defects and assess the quality of windows, doors production, closing and installation.
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Germany 
