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If you are sourcing 4,4'-Diaminostilbene-2,2'-disulfonic acid from China ,just feel free to inquire

Company：	Levachem Co. Ltd.
Contact：
Phone：	+86-25-83247442/443/445/446/447
Mobile phone：
Fax：	+86-25-83247441
E-mail：	sales@levachem.com
Website：	http://www.levachem.com
Address：	2112 SuNing Universal Mansion, 188 Guangzhou Road, Nanjing 210024, China
Zip Code：	210024

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4,4'-Diaminostilbene-2,2'-disulfonic acid