1. Nature and field: Kewei is the trade name of a drug, and its common name is oseltamivir phosphate, which is mainly used to treat and prevent influenza. Nuotai Bio is a biomedical enterprise, focusing on independent research and development and customized research and development of polypeptide drugs and micromolecule drugs.

2. Ownership and operation: Kewei is a registered trademark and drug produced by Dongyangguang Pharmaceutical Co., Ltd., while Nuotai Bio is an independent listed company with its own management team and R&D strength, and its shares are publicly traded on the exchange.

3. Dongyang Guangyao is the largest manufacturer of macrolides in the world and has passed the FDA certification in the United States. It is also the largest Tamiflu production base in China, one of the enterprises with the highest level of producing insulin biopharmaceuticals, and a new drug research and development enterprise with more overseas experts, excellent equipment, and the strongest strength in China.