• WR93 Passive House Aluminium Windows

    The Passive House comes from the German term Passivhaus, which was first used by Sweden Professors Bo Adamson and Germany Wolfgang Feist, and has continued to be used since the first Passivhaus dwellings were built in Darmstadt in 1991. Passive house doors and windows are a systematic high-tech product combination, which is a door and window product that achieves certain energy-saving and environmental protection standards in the main physical properties such as airtightness, watertightness, sound insulation, heat preservation and heat…

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