848280000000 under HS Code BALL OR ROLLER BEARINGS - OTHER, INCLUDING COMBINED BALL OR ROLLER BEARINGS, 847490000000 under HS Code MACHINERY FOR SORTING, SCREENING, SEPARATING, WASHING, CRUSHING, GRINDING, MIXING OR KNEADING EARTH, STONE, ORES OR OTHER MINERAL SUBSTANCES, IN SOLID (INCLUDING POWDER OR PASTE) FORM; MACHINERY FOR AGGLOMERATING, SHAPING OR MOULDING SOLID MINERAL FUELS, CERAMIC PASTE, UNHARDENED CEMENTS, PLASTERING MATERIALS OR OTHER MINERAL PRODUCTS IN POWDER OR PASTE FORM; MACHINES FOR FORMING FOUNDRY MOULDS OF SAND - PARTS, and 731815000000 under HS Code SCREWS, BOLTS, NUTS, COACH-SCREWS, SCREW HOOKS, RIVETS, COTTERS, COTTER-PINS, WASHERS (INCLUDING SPRING WASHERS) AND SIMILAR ARTICLES, OF IRON OR STEEL - THREADED ARTICLES : OTHER SCREWS AND BOLTS, WHETHER OR NOT WITH THEIR NUTS OR WASHERS were the top imported HS Codes by GRN CONSTRUCTIONS ZAMBIA LIMITED in 2021.