86079100 under HS Code PARTS OF RAILWAY OR TRAMWAY LOCOMOTIVES OR ROLLING-STOCK - OTHER : OF LOCOMOTIVES, 84833000 under HS Code TRANSMISSION SHAFTS (INCLUDING CAM SHAFTS AND CRANK SHAFTS) AND CRANKS; BEARING HOUSINGS AND PLAIN SHAFT BEARINGS; GEARS AND GEARING; BALL OR ROLLER SCREWS; GEAR BOXES AND OTHER SPEED CHANGERS, INCLUDING TORQUE CONVERTERS; FLYWHEELS AND PULLEYS, INCLUDING PULLEY BLOCKS; CLUTCHES AND SHAFT COUPLINGS (INCLUDING UNIVERSAL JOINTS) -BEARING HOUSINGS, NOT INCORPORATING BALL OR ROLLER BEARINGS; PLAIN SHAFT BEARINGS, and 84149090 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 - PARTS : OTHER. were the top exported HS Codes by MIKURA INTERNATIONAL in 2021.