J & K SCIENTIFIC LTD.
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Websitehttps://www.jkchemical.com
3B Pharmachem (Wuhan) International Co.,Ltd.
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Websitehttps://www.chemicalbook.com/ShowSupplierProductsList13285/0_EN.htm
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
ShangHai KenEn Chemical Technology Co., Ltd.
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Zhengzhou Guancheng Laboratory equipment Sales
Telephone0371-88888888 qq272369594;2159423853qq
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList16848/0_EN.htm
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226
Websitehttps://www.rrkchem.com
LGC Science (Shanghai) Ltd.
Telephone17717235263 17717235263
Websitehttps://www.lgcstandards.com/CN/en/
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
Telephone+86-15225627621 +86-13213167925
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