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If you are sourcing 4,4-Diaminostilbene-2,2-Disulfonic Acid from United-States ,just feel free to inquire

Company：	PHT International Inc.
E-mail：	chem@netsun.com
Address：	7422 Carmel Executive Park DriveSuite 202Charlotte, NC 28226USA
Zip Code：

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4,4-Diaminostilbene-2,2-Disulfonic Acid