Tray label is used by United State Postal Service for labeling of postal tray, for automation rate mailings, for periodical and standard mail. USPS Tray Label linear symbology ( USPS 25 Tray Label). This is in fact Interleaved 2 of 5 symbology with exactly 10 digits encoded: 5-digit Zip Code (the tray destination) and a 3-digit content identifier number(CIN), and a 2-digit USPS processing code. Our barcode designer software can make USPS tray labels/stickers/tags in few steps.