390210000000 under HS Code POLYMERS OF PROPYLENE OR OF OTHER OLEFINS, IN PRIMARY FORMS POLYPROPYLENE, 853710000000 under HS Code BOARDS, PANELS, CONSOLES, DESKS, CABINETS AND OTHER BASES, EQUIPPED WITH TWO OR MORE APPARATUS OF HEADING 8535 OR 8536, FOR ELECTRIC CONTROL OR THE DISTRIBUTION OF ELECTRICITY, INCLUDING THOSE INCORPORATING INSTRUMENTS OR APPARATUS OF CHAPTER 90, AND NUMERICAL CONTROL APPARATUS, OTHER THAN SWITCHING APPARATUS OF HEADING 8517 FOR A VOLTAGE NOT EXCEEDING 1,000 V, and 940690900000 under HS Code Others were the top imported HS Codes by H &J FIBRE INVESTMENT TANZANIA CO LIMITED in 2021.