J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
S.Z. PhyStandard Bio-Tech. Co., Ltd.
Telephone0755-83725681-603
Websitehttp://www.phystandard.com.cn
Jinan Kabotang Biological Technology Co.,Ltd.
Telephone0531-61320525 15866703830
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList30553/0.htm
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Jinan Carbotang Biotech Co.,Ltd.
Telephone +8615866703830
Websitehttps://www.chemicalbook.com/manufacturer/jinan-carbotang-biotech-107/
Hangzhou Jinghao Biotechnology Co., LTD
Telephone17513242016 17513242016
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1421058/0.htm
Beijing Qinling Pharmaceutical Co., Ltd.
Telephone010-61241352 18901327973
Websitehttp://www.qlmed.com/
Shanghai Haohong Scientific Co., Ltd.
Telephone400-400-8210725
Websitehttps://www.leyan.com/
Shanghai Yifei Biotechnology Co. , Ltd.
Telephone021-65675885 18964387627
Websitehttp://www.efebio.com
SHANGHAI KEAN TECHNOLOGY CO., LTD.
Telephone +8613817748580
Websitewww.kean-chem.com
Watson Biotechnology Co.,Ltd
Telephone+86-18186686046 +86-18186686046
Websitehttps://www.chemicalbook.com/manufacturer/cnwhwatson/
Henan Fengda Chemical Co., Ltd
Telephone+86-371-86557731 +86-13613820652
Websitehttp://www.fdachem.com
LEAPCHEM CO., LTD.
Telephone+86-852-30606658
Websitehttp://www.leapchem.com
