LED面板灯的导光板会变黄是什么原因 导光板材料氧化变性
Q: LED面板灯的导光板会变黄是什么原因A:导光板材料氧化变性，还有丝印墨水问题。
Q: PS很容易变黄？
We have lots of problem of PS earlier almost all of them are replaced due to return yellow in fewmonths.
http://i2.muimg.com/562331/7fc0fa6ed92e5679.png
A:估计是材料问题吧。
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