Yan Feng Liu

Directeur Général chez

Beijing Tong Ren Tang Technologies (Tangshan) Co., Ltd.

Health Technology

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Latest insider transactions

An executive increases exposure to an industrial stock

Sector rotation: insiders are more active on clean energy names

New regulatory filing published for executive transactions

Executive Management

Board of Directors

Audit Committee

Institutional Investors

Sell-side Analysts

2026 - Chairman of the Board

2022 - Chief Executive Officer

2018 - Chief Financial Officer

2012 - Strategy Committee Member