84145990 under HS Code AIR OR VACUUM PUMPS, AIR OR OTHER GAS COMPRESSORS AND FANS; VENTILATING OR RECYCLING HOODS INCORPORATING A FAN, WHETHER OR NOT FITTED WITH FILTERS - FANS : OTHER: OTHER, 73181900 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 - THREADED ARTICLES : OTHER, and 40082190 under HS Code PLATES, SHEETS, STRIP, RODS AND PROFILE SHAPES, OF VULCANISED RUBBER OTHER THAN HARD RUBBER - OF NON-CELLULAR RUBBER : PLATES, SHEETS AND STRIP : OTHER were the top imported HS Codes by M M STEEL CORPORATION PRIVATE LIMITED in 2021.