The utility model discloses a packaging assembly. The packaging assembly is configured to accommodate a plurality of fibrous membranes, wherein the plurality of fibrous membranes are configured to filter a fluid; the packaging assembly can comprise an elongating tubular member; the elongating tubular member comprises an elongating wall which extends between the first end and the second end, and a removable bin gate which is connected to the edges of the opposite sides of the elongating wall, so as to form the packaging assembly with hollow inside; and the inside of the elongating tubular member can be configured to accommodate the plurality of fibrous membranes which are configured to filter the fluid.