The aluminum window in the balcony position is generally drenched in the sun and rain, of course, it is very easy to oxidize and fade, but if you choose a good spraying process, the chance of fading will be very small. Generally speaking, the quality of aluminum windows and doors is much better than that of plastic steel windows and doors. The fading of plastic steel is inevitable, the material of plastic steel itself is good, but it is necessary to fade for a long time, to aging, this can not ......