84241090 under HS Code Others, 85365099 under HS Code Others, and 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 were the top imported HS Codes by DUY TU TU CHANG ONE MEMBER CO LTD in 2021.