Eisai’s affiliates in China are wholly-owned by Eisai Co., Ltd., a Japanese multinational pharmaceutical company headquartered in Tokyo, with strong R&D capabilities. It was founded in1941. Since its foundation, the company has actively expanded into overseas markets and now has sales subsidiaries and factories in America, Europe and Asia.

Eisai China has been smoothly developing its business in China since the early 1990s, now consisting of Eisai China Holdings Ltd., Eisai China Inc., Eisai (Liaoning) Pharmaceutical Co., Ltd. and Eisai (Suzhou) Trading Co., Ltd.