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Optical Brighteners For Plastic, Resin

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荧光增白剂KCB新 — A
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荧光增白剂4bk新 — A

cof — A

cof — A

荧光增白剂OB新 — A

BBU正 — A

荧光增白剂KSB新 — A

Intermediate

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O
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J
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C
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9
F
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