8536699008 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: - OTHER: OF OTHER MATERIALS, 8507800000 under HS Code ELECTRIC ACCUMULATORS, INCLUDING SEPARATORS THEREFOR, WHETHER OR NOT RECTANGULAR (INCLUDING SQUARE) OTHER ACCUMULATORS, and 8507600000 under HS Code LITHIUM-ION were the top imported HS Codes by JOINT STOCK COMPANY ENERGY in 2021.