Classification of aluminum alloys
There are actually two categories of aluminum alloys, one is ordinary doors and windows, and the other is bridge-cut aluminum doors and windows. Ordinary doors and windows are ordinary aluminum alloy doors and windows. That's the literal meaning, but the broken bridge aluminum doors and windows are actually an upgrade on the basis of ordinary aluminum alloy doors and windows. He said that a material, nylon or other materials, was added in the middle of the aluminum material to block it. This way, the aluminum alloy material can be divided into two parts, playing a simple role in blocking heat conduction. Aluminum alloy doors and windows are relatively cheap. But it does not provide insulation, but the opposite is true for broken bridge doors and windows. Although expensive, it is highly insulated and insulated.