J & K SCIENTIFIC LTD.
Telephone18210857532 18210857532
Websitehttps://www.jkchemical.com
Sigma-Aldrich
Telephone021-61415566 800-8193336
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Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226
Websitehttps://www.rrkchem.com
Jinan Ruisi Pharmaceutical Technology Co., LTD
Telephone0531-0531-69900633 19963472814
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HANGZHOU LEAP CHEM CO., LTD.
Telephone+86-571-87711850 +86-15355479329
Websitehttp://www.leapchem.com