The subject of this invention is a method for matching transport channels included within a composite channel. The present invention also relates to a method for combating such pests and for protecting crops against infestation or infection by such pests. A method of operating the refrigeration system includes communicating a code from the subsystem controller to the system controller, obtaining information at the system controller having a relation to the code; and communicating at least a portion of the obtained information from the system controller to the subsystem controller. The resulting fine fiber, microfiber and nanofiber materials have excellent thermal and chemical resistance for a variety of fiber applications. The sleeve portion may have an opening opposite the heel portion. The first and second cover plates are separately set at both ends of the rear panel of the main body, such that the first cover plate is used to cover the first opening of the first file holder, and the second cover plate used to cover the second opening of the second file holder.