Alcoa said on April 16 local time that some of its materials come from China suppliers. Since there is no suitable alternative supplier, the high tariffs imposed by the United States on China will increase the company's annual costs by US$10 million to US$15 million.

Trading company Marubeni Corp said that as of the end of March 2025, aluminum inventories in Japan's three major ports fell to 309700 tons, down about 1.2% from the previous month. Specifically, inventories in Nagoya and Yokohama fell in varying degrees, while inventories in Osaka rebounded slightly.

The National Bureau of Statistics reported on April 16: The output of ten non-ferrous metals in March was 6.92 million tons, a year-on-year increase of 3.7%. The output of ten non-ferrous metals from January to March was 19.85 million tons, a year-on-year increase of 2.0%. Among them: primary aluminum (electrolytic aluminum) output in March was 3.75 million tons, a year-on-year increase of 4.4%. 1-3 Monthly output was 11.07 million tons, a year-on-year increase of 3.2%