842139100000 under HS Code CENTRIFUGES, INCLUDING CENTRIFUGAL DRYERS; FILTERING OR PURIFYING MACHINERY AND APPARATUS, FOR LIQUIDS OR GASES FILTERING OR PURIFYING MACHINERY AND APPARATUS FOR GASES: OTHER: AIR SEPARATORS TO BE EMPLOYED IN THE PROCESSING, SMELTING OR REFINING OF MINERALS, ORES OR METALS; AIR STRIPPERS, 845229000000 under HS Code SEWING MACHINES, OTHER THAN BOOK-SEWING MACHINES OF HEADING 8440; FURNITURE, BASES AND COVERS SPECIALLY DESIGNED FOR SEWING MACHINES; SEWING MACHINE NEEDLES OTHER, and 847420000000 under HS Code Others were the top imported HS Codes by HUATAN INVESTMENT GROUP COMPANY LIMITED in 2023.