[問題] 浴缸出現一圈一圈的黑點?
請問有人知道該如何清除這些黑點嗎?
我試過市面的去霉劑、除水垢劑,
也將整個浴缸泡漂白水、泡小蘇打,
拼命刷都無法清除。
真的好想洗掉它們喔......
http://i.imgur.com/VEWbjkF.jpg


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