90321090 under HS Code AUTOMATIC REGULATING OR CONTROLLING INSTRUMENTS AND APPARATUS 9032 10 AUTOMATIC REGULATING OR CONTROLLING INSTRUMENTS AND APPARATUS - THERMOSTATS: OTHER, 85169000 under HS Code ELECTRIC INSTANTANEOUS OR STORAGE WATER HEATERS AND IMMERSION HEATERS; ELECTRIC SPACE HEATING APPARATUS AND SOIL HEATING APPARATUS; ELECTROTHERMIC HAIR-DRESSING APPARATUS (FOR EXAMPLE, HAIR DRYERS, HAIR CURLERS, CURLING TONG HEATERS) AND HAND DRYERS; ELECTRIC SMOOTHING IRONS; OTHER ELECTRO-THERMIC APPLIANCES OF A KIND USED FOR DOMESTIC PURPOSES; ELECTRIC HEATING RESISTORS, OTHER THAN THOSE OF HEADING 8545 PARTS, and 85365020 under HS Code ELECTRICAL APPARATUS FOR SWITCHING OR PROTECTING ELECTRICAL CIRCUITS, OR FOR MAKING CONNECTIONS TO OR IN ELECTRICAL CIRCUITS (FOR EXAMPLE, SWITCHES, RELAYS, FUSES, SURGE SUPPRESSORS, PLUGS, SOCKETS, LAMP-HOLDERS, JUNCTION BOXES), FOR A VOLTAGE NOT EXCEEDING 1,000 VOLTS - OTHER SWITCHES: OTHER SWITCHES OF PLASTIC. were the top exported HS Codes by DENKI ENGINEERING CO PRIVATE LIMITED in 2021.