Biology Discovery Publisher, a lead journal in the field, made the following rating based on a survey among readers, and has very specific arguments laid out in the article:
传奇生物. Nr. 1 Legend Biotech (affiliation of Genescript Biotech Co. Ltd (HK01548)), Nanjing.
亚盛医药 Nr. 2 Ascentage Pharma http://en.ascentagepharma.com/about.html, Suzhou
信达生物 Nr. 3 Innovent Biologics http://www.innoventbio.com/en/, Suzhou
百济神州 Nr. 4 BeiGene http://www.beigene.com/company/about-us/, Headquarter Beijing
世和基因 Nr. 5 Genesen https://www.geneseeq.com, Nanjing
丽珠医药 Nr. 6 LivZon Pharma Group http://www.livzon.com.cn/English/, Zhuhai
华大基因 Nr. 7 BGI https://www.bgi.com, Shenzhen
康宁杰瑞 Nr. 8 Alphamab Co. Ltd. http://www.alphamab.com/en/index.html., Suzhou
基石药业 Nr. 9 Stone pharmaceuticals, Shanghai
誉衡药业 Nr. 10 Gloria Pharmaceuticals http://www.gloria.cc, Harbin
*English names of companies: Dr Xin XIONG’s translation is gratefully acknowledged
China Bio news release, January 3, 2018