J & K SCIENTIFIC LTD.
Telephone 18210857532
Websitehttps://www.jkchemical.com
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Chemsky(shanghai)International Co.,Ltd.
Telephone021-50135380
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Shanghai ChuangYan Chemical Technology Co., Ltd.
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Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
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Shaanxi Xihua Chemical Industry Co., Ltd
Telephone029-89586681 15829046862
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Hubei Danding Pharmaceutical Technology Co., Ltd
Telephone17701422016 17701422016
Websitehttp://www.hbdandingyy.com
Merck KGaA
Telephone21-20338288
Websitehttp://www.sigmaaldrich.cn
DAYANG CHEM (HANGZHOU) CO.,LTD
Telephone +8617705817739
Websitewww.dycnchem.com