851830000000 under HS Code MICROPHONES AND STANDS THEREFOR; LOUDSPEAKERS, WHETHER OR NOT MOUNTED IN THEIR ENCLOSURES; HEADPHONES AND EARPHONES, WHETHER OR NOT COMBINED WITH A MICROPHONE, AND SETS CONSISTING OF A MICROPHONE AND ONE OR MORE LOUDSPEAKERS; AUDIOFREQUENCY ELECTRIC AMPLIFIERS; ELECTRIC SOUND AMPLIFIER SET HEADPHONES AND EARPHONES, WHETHER OR NOT COMBINED WITH A MICROPHONE, AND SETS CONSISTING OF A MICROPHONE AND ONE OR MORE LOUDSPEAKERS, 854442000000 under HS Code Others, and 843139000000 under HS Code Others were the top imported HS Codes by NAS DAR AIRCO COMPANY LIMITED in 2021.