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怎么辨别涂层的好坏呢?首先,最基本的就是表面的喷涂效果要平整,不能出现疙瘩,纯颜色的话就不能有杂色。这个是最基本的。然后,就是涂层的附着力,这个就可以切一小段用锤子砸扁,看是不是会整块脱落,看涂层和里面的镀锌材料有没有完全粘合在一起。如果一砸就分层脱落那就是厂家的喷涂工艺有问题或者选用的粉末涂料有问题。其实如果第二个方面做好了一般都不会出现一个方面的情况。第二个方面也是最关键的。至于时间久了会不会褪色,可以说如果前面两个方面做到位的厂家那肯定工艺和材料都还可以的,围墙铁艺护栏产品,基本不会出现褪色的可能。
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