85366110000 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 - LAMP-HOLDERS, PLUGS AND SOCKETS: - LAMP-HOLDERS: OF PLASTIC, 85399090000 under HS Code ELECTRIC FILAMENT OR DISCHARGE LAMPS, INCLUDING SEALED BEAM LAMP UNITS AND ULTRA-VIOLET OR INFRA RED LAMPS; ARC-LAMPS - PARTS: OTHER, and 85366199000 under HS Code Others were the top imported HS Codes by SUB MINIATURE LAMPS INDUSTRIES INC in 2021.