A flash memory storage apparatus including a multi level cell NAND flash memory, a flash memory controller, and a host transmission bus is provided. The network is adapted to transmit a notification message to at least a sub group of the user equipments, a first part of the message comprising a representation from which a user equipment can determine whether its present location is within a certain geographical area. The IP datagram is sent by an IP network device with a given priority. The computer converts the customs data to have a universal format, then processes the data to detect errors. The powder pulverizing member is disposed in the first conveying unit so as to be able to oscillate. The window covering article is formed of a closed cell foam of a thermoplastic strengthened with diatomaceous earth having less than about two percent moisture.