Mei Wei ZJS-Broken Bridge aluminum doors and windows have good thermal insulation. The inner and outer borders of the thermal insulation profile are flexibly combined, and the borders are in the form of one rubber strip, two wool strips and three seals, which are tightly sealed, excellent in air tightness and water tightness and excellent in thermal insulation performance; The window sash adopts hollow glass structure, which makes the window truly embody the excellent functions of sound insulation, heat insulation and heat preservation, and saves a lot of heating and cooling expenses. After testing, the heat transfer coefficient K is below 2.23-2.94 W/2k, and the energy saving effect is remarkable. The cost of energy saving for several years is enough to make up for the previous investment.
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