1. Liaodong Peninsula: Located in the northeast of China, it is bordered by the Bohai Sea and the Yellow Sea. It's known for its industrial cities and agriculture.

2. Shantung Peninsula: Also in northeast China, it extends into the Yellow Sea. It's famous for its historical sites, including Mount Tai, and for its agricultural production.

3. Leizhou Peninsula: Situated in the south of China, it projects into the South China Sea. This peninsula is known for its tropical climate, its diverse flora and fauna, and for its seafood industry.