6809190000 under HS Code ARTICLES OF PLASTER OR OF COMPOSITIONS BASED ON PLASTER - BOARDS, SHEETS, PANELS, TILES AND SIMILAR ARTICLES, NOT ORNAMENTED : OTHER, 3921139000 under HS Code OTHER PLATES, SHEETS, FILM, FOIL AND STRIP, OF PLASTICS - CELLULAR : OF POLYURETHANES:OTHER, and 7019199009 under HS Code Others. were the top exported HS Codes by ACOUSTIC RU LLC in 2021.