国家/地区 中国（2）
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC B01D061/58（2）
发明人
公开年 2021（2）
申请年
专利权人

Composite filtering structure for filter element, has first filter film connected with second filter film that is provided with first and second graphene micro-sheets, where first filter film includes first surface and second surface.

XIAO Y

Graphene composite filter film comprises embedded ring, where upper and lower surfaces of embedded ring are adhered with uncovering outer cover, and outer side of uncovering outer cover is fixed with pulling piece integrated with it.