85311020 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 -BURGLAR OR FIRE ALARMS AND SIMILAR APPARATUS: FIRE ALARM, 85311010 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 -BURGLAR OR FIRE ALARMS AND SIMILAR APPARATUS: BURGLAR ALARM, and 84813090 under HS Code Others were the top imported HS Codes by DA KAO ALARM FIRE ALARM TRADING COMPANY LIMITED in 2021.