The continuous development of modern filtration technology has created strong demand for materials capable of supporting increasingly complex composite filter structures. As filtration systems become more advanced, manufacturers are no longer relying on single-layer media alone. Instead, multilayer constructions combining fine fiber layers, activated carbon materials, and reinforcement fabrics are becoming the preferred solution for achieving high filtration efficiency together with stable airflow performance and long operational durability. Within these advanced constructions, the support layer plays a critical role in maintaining structural consistency and helping different filtration components function together effectively. Yuzhimu composite filter media support layer has emerged as an engineered nonwoven material specifically designed to support these demanding filtration applications through a balanced combination of strength, permeability, dimensional stability, and process compatibility.