SENIOR.SENIOR, established in 2003, is a national high-tech enterprise specializing in the R&D, production, and sales of lithium-ion battery separators and various functional membranes. The company's product portfolio encompasses dry-process, wet-process, and coated separators, positioning it as one of the world's most comprehensive and quality-leading manufacturers of lithium battery separators. Leveraging its robust technological strengths, SENIOR has successfully localized lithium battery separator production, breaking foreign technological monopolies and pioneering China's path to self-sufficiency in this critical component. It became one of the earliest domestic separator manufacturers to achieve bulk exports overseas. Its products are widely applied across new energy vehicles, consumer electronics, energy storage power stations, and even aerospace sectors. By establishing a powerful integrated supply chain system encompassing R&D, production, and sales, SENIOR has made significant contributions to China's industrial security.