4002192000 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 - STYRENE-BUTADIENE RUBBER (SBR); CARBOXYLATED STYRENE-BUTADIENE RUBBER (XSBR) : - OTHER : STYRENE BUTADIENE RUBBER WITH STYRENE CONTENT EXCEEDING 50%, 2901100001 under HS Code ACYCLIC HYDROCARBONS - SATURATED, and 3903300000 under HS Code POLYMERS OF STYRENE, IN PRIMARY FORMS - ACRYLONITRILE - BUTADINE - STYRENE (ABS) COPOLYMERS. were the top exported HS Codes by T1 LLC in 2021.