84029090 under HS Code STEAM OR OTHER VAPOUR GENERATING BOILERS (OTHER THAN CENTRAL HEATING HOT WATER BOILERS CAPABLE ALSO OF PRODUCING LOW PRESSURE STEAM); SUPERHEATED WATER BOILERS - PARTS: OTHER, 73045990 under HS Code Others, and 84622910 under HS Code MACHINE-TOOLS (INCLUDING PRESSES) FOR WORKING METAL BY FORGING, HAMMERING OR DIE-STAMPING; MACHINE-TOOLS (INCLUDING PRESSES) FOR WORKING METAL BY BENDING, FOLDING, STRAIGHTENING, FLATTENING, SHEARING, PUNCHING OR NOTCHING; PRESSES FOR WORKING METAL OR METAL CARBIDES, NOT SPECIFIED ABOVE - BENDING, FOLDING, STRAIGHTENING OR FLATTENING MACHINES (INCLUDING PRESSES): OTHER: BENDING AND STRAIGHTENING MACHINES were the top imported HS Codes by NAM AN MECHANICAL AND ENVIRONMENT JOINT STOCK COMPANY in 2021.