ualifyasascribe划线分为可触摸和不可触摸，包铝层变色和小面积的表面不规则是不适合划线的，在搭结处和对缝处的雷击也不适合划线。划线可以能触摸到也可以是触摸不到的。包铝层的变色或小面积的不完整并不是划线。在结合部位的雷击也不是划线。10Acrazi
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dows龟裂常常是由于不正确的安装引起，如果你失误使用与丙烯酸窗户不合适的材料也会引起龟裂。龟裂通常是由不正确的安装造成的。当失误运用与acrylic（聚丙烯酸树脂）窗户不匹配的材料时也会造成龟裂
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