Rubber, gutta-percha, gum, asbestos and mica whether unwrought or semi-wrought, as well as substitutes for these materials; plastic materials and resins in extruded form used in manufacturing processes; packing, stopping and insulating materials; flexible tubes, not of metal

office products, desk accessories and filing supplies; namely, files, expanding files, travel files, folders, file folders, classification folders, expanding folders, hanging file folders, report covers, ring binders, sheet lifters, padfolios, clipboards, rack systems for hanging folders, viewers, daily viewers and diskette viewers