ＰＶＣ塑料门窗是一种特殊产品 ,从型材生产到组装均在工厂进行 ,只要安装合乎规范 ,消费者很难检查其质量 ,但并不是说无法检查了。下面介绍一些简单的方法 ,消费者只需目测观察或用一把卷尺等简单工具 ,即可对型材的质量特别是安装质量进行检查。一、看窗户表面。窗框要洁净 PVC plastic doors and windows are a special product, from the production of the profiles to the assembly in the factory, as long as the installation is in line with the specifications, it is difficult for consumers to check their quality, but it is not that they cannot be checked. Here are some simple methods. Consumers can inspect the quality of a profile, especially its installation quality, simply by visually observing it or using a tape measure and other simple tools. First, look at the window surface. Window frames must be clean