Shenzhen Senior Technology Material (深圳市星源材质科技股份有限公司, 星源材质) is a company that engages in research and development, manufacturing, and sales of lithium-ion battery separators. The company offer dry-process, wet-process, and coated-process battery separators. Its products are used in electric cars, electric tools, energy storage, aerospace, phones, cameras, computers, and other applications.