A non-volatile flash memory that may have an improved layout freedom is disclosed. Also disclosed are formulations for three-layered polymer composite materials and surface sealing coatings, which are used in monolithic formation of receptacles or containers of electrolytic cells. A first exhaust pipe, a second exhaust pipe, and a third exhaust pipe are connected to the flow-joining pipe in sequence. The stack has an axis of maximum moment of inertia that is not parallel to the central axis. This reduces communication traffic in a network such as the Internet 20.