Shanghai Kewel Chemical Co., Ltd.
Telephone021-64609169 18901607656
Websitehttp://www.kewelchem.com/
Hubei Yangxin Medical Technology Co., Ltd.
Telephone 15374522761
Websitehttps://www.standardpharm.org.cn/
Wuxi Helen Biotechnology Co., Ltd.,
Telephone0510-85629785 18013409632
Websitehttp://www.reading-chemicals.com
Shenzhen Qingtian Biotechnology Co, Ltd.
Telephone18823167005 18162969855
Website
Hubei Rhema Reference Materials Technology Co., Ltd.
Telephone15787879035 15787875101
Websitehttps://www.chemicalbook.com/supplier/138770565/
Hubei YoungXin Pharmaceutical Tech Co.,Ltd.
Telephone0714-3999001 19171453112
Websitehttp://www.yongstandards.com/
Beijing Comparison Pharmaceutical Technology Co., Ltd
Telephone010-010-52878169 15801002657
Websitehttp://www.bjcomparison.com
Jilin Chinese Academy of Sciences-yanshen Technology
Telephone 18143011203
Websitehttp://www.chemextension.com/
