73269099 under HS Code OTHER ARTICLES OF IRON OR STEEL - OTHER : OTHER : OTHER, 39269099 under HS Code OTHER ARTICLES OF PLASTICS AND ARTICLES OF OTHER MATERIALS OF HEADINGS 3901 TO 3914- OTHER : OTHER: OTHER, and 73182400 under HS Code SCREWS, BOLTS, NUTS, COACH-SCREWS, SCREW HOOKS, RIVETS, COTTERS, COTTER-PINS, WASHERS (INCLUDING SPRING WASHERS) AND SIMILAR ARTICLES, OF IRON OR STEEL - NON-THREADED ARTICLES : COTTERS AND COTTER-PINS. were the top exported HS Codes by ULELA ENGINEERING CO LTD in 2021.