The advantages of ordinary aluminum alloy windows are good weather resistance and aging resistance. (Disadvantage) The thermal insulation is not as good as other materials, and the colors are only white and tea. The advantages of plastic steel windows are good sound insulation, thermal insulation, fire resistance, air tightness, water tightness, corrosion resistance, thermal insulation, etc. (Disadvantage) After all, it is a PVC plastic profile. After a long time, the surface will turn yellow and the window will deform, so the service life is 20-30 years.