J & K SCIENTIFIC LTD.
Telephone18210857532; 18210857532
Websitehttps://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
S.Z. PhyStandard Bio-Tech. Co., Ltd.
Telephone0755-4000505016 13380397412
Websitehttps://www.sincopharmachem.net
Shanghai TaoSu Biochemical Technology Co., Ltd.
Telephone021-33632979
Websitehttp://www.tsbiochem.com
Cato Research Chemicals Inc.
Telephone020-81960175
Websitehttp://www.cato-chem.com
Artis Biotech Co. Ltd.
Telephone19138486554 18108108965
Websitehttps://artis-standards.com/
Shanghai EFE Biological Technology Co., Ltd.
Telephone021-65675885 18964387627
Websitehttp://www.efebio.com
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Shijiazhuang Gantuo Biotechnology Co., Ltd
Telephone +8613373514458
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1309836/0_EN.htm
Nanjing Shizhou Biology Technology Co.,Ltd
Telephone025-025-85560043 17301488900
Websitehttp://www.synzest.com
ChengDu SinoStandards Bio-Tech Co.,Ltd. ，
Telephone028-83243028 19136088901
Websitehttp://www.ebuylabs.com/
Wuhan Topule
Telephone+86-02787215551 19945035818
Websitehttp://www.topule.com/
Manhag Testing Technology Co., Ltd
Telephone400-818 0104 18918165978
Websitehttp://www.bepurestandards.com/
Hubei Kele Fine Chemical Co., Ltd
Telephone027-59101668 19945030958
Websitehttp://www.kerle.cn
Yancheng Tongming Biotechnology Co., Ltd.
Telephone 15195160625
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1089086/0_EN.htm
Wuhan Augda Biotechnology Co., Ltd
Telephone 15071299552
Websitehttps://www.chemicalbook.com/supplier/24275232/1.htm
LGC Science (Shanghai) Ltd.
Telephone 17717235263
Websitehttps://www.lgcstandards.com/CN/en/Pharmaceutical/cat/279492
Xianning Shen Lan Biomedical Research and Development Co., Ltd.
Telephone 18171815831
Websitehttp://www.shenlansw.com/
