I believe everyone will encounter this problem, which is that the doors and windows at home have been used for a long time, leading to aging of the doors and windows, fracture of the door and window hinges, and failure to close the doors and windows tightly. Is it contradictory for everyone to choose to switch doors when encountering such problems? Or should the entire door frame be replaced together? When this type of problem occurs, the editor believes that the first thing everyone needs to do is to understand the reasons for the deformation of aluminum alloy doors and windows, which is the reason why the doors and windows cannot be tightly closed after being used for a few years.