HD Medicine, or Huadong Medicine Co., Ltd., is a Hangzhou-based pharmaceutical company registered on the Shenzhen Stock Exchange since December 1999. It has a listed share capital of 380,000,000 RMB and a market capitalization of 5.1981 billion RMB . It is the largest pharmaceutical company in Zhejiang and the leading immunosuppressant manufacturer in China.

In June 2025, the company received approval to commence clinical trials for Roflumilast Foam, targeting dermatological conditions.

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