Jilin Chinese Academy of Sciences-yanshen Technology
Telephone 18143011203
Websitehttp://www.chemextension.com/
Shandong Dayou Pharmaceutical Research and Development Co., Ltd.
Telephonehanfangpharma@126.com 15165037910
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Shijiazhuang Yansheng Biotechnology Co., LTD
Telephone18332018567; 18332018567
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