Chinese VersionChina Suppliers > HANGZHOU YIJIANG INDUSTRY Co., Ltd. > 4,4'-Diamino Benzidine-2,2'-Disulfonic Acid
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- Region :China/Zhejiang
- Tel : +86-571-85370188
- Fax : 86-571-85185580 85188497
- Email :Sales@hzyijiang.com
- URL :www.hzyijiang.com
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4,4'-Diamino Benzidine-2,2'-Disulfonic Acid