4002600000 under HS Code SYNTHETIC RUBBER AND FACTICE DERIVED FROM OILS, IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIP; MIXTURES OF ANY PRODUCT OF HEADING 4001 WITH ANY PRODUCT OF THIS HEADING, IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIPISOPRENE RUBBER (IR), 4002200000 under HS Code SYNTHETIC RUBBER AND FACTICE DERIVED FROM OILS, IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIP; MIXTURES OF ANY PRODUCT OF HEADING 4001 WITH ANY PRODUCT OF THIS HEADING, IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIPBUTADIENE RUBBER (BR), and 4002390000 under HS Code SYNTHETIC RUBBER AND FACTICE DERIVED FROM OILS, IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIP; MIXTURES OF ANY PRODUCT OF HEADING 4001 WITH ANY PRODUCT OF THIS HEADING, IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIP- ISOBUTENE-ISOPRENE (BUTYL) RUBBER (IIR); HALO-ISOBUTENE-ISOPRENE RUBBER (CIIR OR BIIR) : OTHER. were the top exported HS Codes by PJSC NIZHNEKAMSKNEFTEKHIM in 2023.