39174000 under HS Code TUBES, PIPES AND HOSES, AND FITTINGS THEREFOR (FOR EXAMPLE, JOINTS, ELBOWS, FLANGES), OF PLASTICS - FITTINGS, 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), and 76069290 under HS Code ALUMINIUM PLATES, SHEETS AND STRIP, OF A THICKNESS EXCEEDING 0.2 MM - OTHER : OF ALUMINIUM ALLOYS : OTHER were the top imported HS Codes by I SOLUTIONS in 2021.