shandong choyong chemical co.,ltd

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carbon black
Specification: n220 n234 n330 n339 n550 n660 n774 rc301
Detail: The mainly type are N220 N234 N330 N326 N339 N550 N660 N774 etc.

carbon black
Specification: n220 n330 n550 n660 n774 etc
Detail: special carbon black used in rubber,tire ,masterbatches and other products.


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