How about Nanjing Sinoma Lithium Film Co., Ltd.?

This company is not bad.

Nanjing Sinoma Lithium Membrane Co., Ltd. is an enterprise specializing in the research, development and production of lithium battery separators. The company has advanced technology and equipment and is committed to providing high-quality products and services. The lithium film produced by it has excellent performance, which can effectively improve the safety and stability of lithium batteries. The company pays attention to scientific and technological innovation, constantly introduces new products, and cooperates with many well-known enterprises to carry out projects.