Is the screen window made of aluminum alloy or plastic steel?

This has to be compared with the same grade. We can't compare good plastic steel with cheap aluminum alloy, nor can we compare good aluminum alloy with cheap plastic steel. At the same level, I personally think that aluminum alloy is better, from three aspects. First, the material, the material of plastic steel is resin. To put it bluntly, plastic is definitely not as strong as metal. Second, aging resistance, good aluminum alloy will not age, plastic window is easy to age and crack after a long time. Third; Environmental protection, plastic windows release a lot of toxic substances at high temperature, and good aluminum alloys hardly release toxic substances. So overall, aluminum alloy is a good choice.