940540990000 under HS Code Others, 853090000000 under HS Code ELECTRICAL SIGNALLING, SAFETY OR TRAFFIC CONTROL EQUIPMENT FOR RAILWAYS, TRAMWAYS, ROADS, INLAND WATERWAYS, PARKING FACILITIES, PORT INSTALLATIONS OR AIRFIELDS (OTHER THAN THOSE OF HEADING 8608) - PARTS, and 853669100000 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 PLASTIC were the top imported HS Codes by UGUR BILGI SISTEMLERI ELEK.MÜM.MONT.SAN.VE TIC.LT.S. in 2021.