This volume reports on trends of production and shipment data of rolled aluminum products including foil and extruded products for 2023 (January-December) based on data released by the Japan Aluminium Association.  The report on total aluminum demand for 2023 will be covered in the next volume (Vol. 400).In 2023, the ratio of rolled and extruded products occupied approximately 51% of the total aluminum product demand.  Thus, the trends in this area is the focal point with regard to aluminum demand.Rolled products, extruded products and foil suffered decline for 2 consecutive years.  By demand sector, although the recovery in domestic automobile production contributed to the rolled and extruded product sector, we cannot be too optimistic due to delays in the return to normal for construction and semiconductor manufacturing equipment.  Nevertheless, in the latter half of 2024, it is expected that plates for semiconductor manufacturing equipment will see a major recovery.It was announced on February 7, 2024 that the world’s leading semiconductor manufacturer Taiwan Semiconductor Manufacturing Company (TSMC) has made a large investment of 5.6 trillion yen to build its second plant in Kumamoto which is scheduled to begin operations by 2027. TMSC, Sony Group, Denso, and Toyota will hold equity stakes of 86.5%, 6%, 5.5%, and 2%, respectively.  From the April-June 2024 quarter, the semiconductor demand is expected to make a turnaround for the better in the AI and EV fields, boosting the global economy.  In order for this to be attained, recovery in a vast range personal investments and capital investments are required.