84241090 under HS Code Others, 85371019 under HS Code Others, and 85312000 under HS Code ELECTRIC SOUND OR VISUAL SIGNALLING APPARATUS (FOR EXAMPLE, BELLS, SIRENS, INDICATOR PANELS, BURGLAR OR FIRE ALARMS), OTHER THAN THOSE OF HEADING 8512 OR 8530 INDICATOR PANELS INCORPORATING LIQUID CRYSTALDEVICES (LCD) OR LIGHT EMITTING DIODES (LED) were the top imported HS Codes by DAI AN TECHNICAL SERVICE AND TRADING PRODUCTION CO LIMITED in 2021.