J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
Cato Research Chemicals Inc.
Telephone020-81960175
Websitehttp://www.cato-chem.com
Sigma-Aldrich
Telephone021-61415566 800-8193336
Websitehttps://www.sigmaaldrich.cn
Alta Scientific Co., Ltd.
Telephone022-6537-8550 15522853686
Websitehttp://www.altascientific.cn
Shanghai EFE Biological Technology Co., Ltd.
Telephone021-65675885 18964387627
Websitehttp://www.efebio.com
ChemeGen(Shanghai) Biotechnology Co.,Ltd.
Telephone 18818260767
Websitehttp://www.chemegen.com
Wuhan eastop Technology Co., ltd.6
Telephone027-87382885 17702779303
Websitehttp://www.isotopechina.com/index.html
Nanjing Shizhou Biology Technology Co.,Ltd
Telephone025-85560043 15850508050
Websitehttp://www.synzest.com
Manhag Testing Technology Co., Ltd
Telephone020-020-3846236 17688849268
Websitehttp://www.bepurestandards.com/
TargetMol Chemicals Inc.
Telephone 4008200310
Websitehttps://www.targetmol.cn/
Reer Technology (Shanghai) Co., LTD
Telephone021-64400900 15800436310
Websitehttp://www.reertech.com/
LGC Science (Shanghai) Ltd.
Telephone 17717235263
Websitehttps://www.lgcstandards.com/CN/en/Pharmaceutical/cat/279492
Shanghai Saikerui Biotechnology Co. , Ltd.
Telephone021-58000709 15900491054
Websitehttp://www.scrbio.com/
Shanghai Beiwanta Biotechnology Co., Ltd.
Telephone021-67187366 19901745723
Websitehttp://www.bwtlab.com/
Shanghai Aladdin Biochemical Technology Co.,Ltd.
Telephone +86-18521732826
Websitehttp://www.aladdin-e.com/
SHANGHAI ZZBIO CO., LTD.
Telephone15102117276 19921389125
Websitehttps://www.zzsrm.cn/
