850440909019 under HS Code ELECTRICAL TRANSFORMERS, STATIC CONVERTERS (FOR EXAMPLE, RECTIFIERS) AND INDUCTORS -STATIC CONVERTERS: OTHER, 841459259000 under HS Code Others, and 854129000019 under HS Code DIODES, TRANSISTORS AND SIMILAR SEMI-CONDUCTOR DEVICES; PHOTOSENSITIVE SEMI-CONDUCTOR DEVICES, INCLUDING PHOTOVOLTAIC CELLS WHETHER OR NOT ASSEMBLED IN MODULES OR MADE UP INTO PANELS; LIGHT EMITTING DIODES; MOUNTED PIEZO-ELECTRIC CRYSTALS - TRANSISTORS, OTHER THAN PHOTOSENSITIVE TRANSISTORSOTHER were the top imported HS Codes by ZCN ELEKTRONİK ELEKTRİK TELEKOMÜNİKASYON BİLGİSAYAR SANAYİ VE TİCARET LİMİTED ŞİRKETİ in 2021.