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Optical Brighteners For Plastic, Resin

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B

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荧光增白剂KCB新 — C
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荧光增白剂OB新 — C

荧光增白剂4bk新 — C

BA 1 — B

cof — B

荧光增白剂OB新 — C

荧光增白剂4bk新 — B

Intermediate

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C
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