68069000 under HS Code SLAG WOOL, ROCK WOOL AND SIMILAR MINERAL WOOLS; EXFOLIATED VERMICULITE, EXPANDED CLAYS, FOAMED SLAG AND SIMILAR EXPANDED MINERAL MATERIALS; MIXTURES AND ARTICLES OF HEAT-INSULATING, SOUND-INSULATING OR SOUND-ABSORBING MINERAL MATERIALS, OTHER THAN THOSE OF HEADING 6811 OR 6812 OR OF CHAPTER 69 OTHER, 70193900 under HS Code GLASS FIBRES (INCLUDING GLASS WOOL) AND ARTICLES THEREOF (FOR EXAMPLE, YARN, WOVEN FABRICS) - THIN SHEETS (VOILES), WEBS, MATS, MATTRESSES, BOARDS AND SIMILAR NON-WOVEN PRODUCTS : OTHER, and 73089090 under HS Code STRUCTURES (EXCLUDING PREFABRICATED BUILDINGS OF HEADING 9406) AND PARTS OF STRUCTURES (FOR EXAMPLE, BRIDGES AND BRIDGE-SECTIONS, LOCK-GATES, TOWERS, LATTICE MASTS, ROOFS, ROOFING FRAME-WORKS, DOORS AND WINDOWS AND THEIR FRAMES AND THRESHOLDS FOR DOORS, SHUTTERS, BALUSTRADES, PILLARS AND COLUMNS), OF IRON OR STEEL; PLATES, RODS, ANGLES, SHAPES, SECTIONS, TUBES AND THE LIKE, PREPARED FOR USE IN STRUCTURES, OF IRON OR STEEL - OTHER : OTHER were the top imported HS Codes by ARMSTRONG WORLD INDUSTRIES INDIA PRIVATE LIMITED in 2021.