▎ 摘　　要

NOVELTY - The structure has first filter film connected with second filter film. The second filter film is provided with first graphene micro-sheet and second graphene micro-sheet, where diameter of the first graphene micro-sheet is greater than 5 microns and less than or equal to 50 microns, diameter of the second graphene micro-sheet is greater than 0 microns and less than or equal to 5 microns, and thickness of the first graphene micro-sheet and the second graphene micro-sheet is greater than or equal to 0.3 nm and less than or equal to 30 nm. Third filter film is fixed on a side of the first filter film. The first filter film includes first surface and second surface opposite the first surface. USE - Composite filtering structure for a filter element (claimed). ADVANTAGE - The structure simplifies a manufacturing process, so that manufacturing cost of the structure is reduced. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for making a composite filtering structure for a filter element. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a composite filtering structure for a filter element.