整理：每日期货市场要闻速递（5月21日）

Group 1 - The price of silicon iron from Hebei Steel for May is set at 5800 CNY/ton, down 150 CNY/ton from April's price of 5950 CNY/ton [1] - As of May 19, the total inventory of imported iron ore at 47 Chinese ports is 146.2763 million tons, a decrease of 2.5825 million tons from the previous week [1] - Satellite data indicates that from May 12 to May 18, the total iron ore inventory at seven major ports in Australia and Brazil increased by 69600 tons to 13.763 million tons [1] Group 2 - According to AmSpec, Malaysia's palm oil exports from May 1 to 20 increased by 1.55% compared to the same period last month [1] - The shipping survey agency ITS reports that Malaysia's palm oil exports from May 1 to 20 increased by 5.3% compared to the same period last month [2] Group 3 - The feed industry reports an increase in the quantity of soybeans passing customs, alleviating the soybean shortage issue, with supply expected to continue increasing [1] - The Brazilian National Grain Exporters Association (Anec) has raised its forecast for Brazil's soybean exports in May to 14.52 million tons, up from the previous estimate of 14.27 million tons [1] Group 4 - From January to April 2025, China imported a total of 67.77 million tons of bauxite, a year-on-year increase of 34.3% [1] - Guinea accounted for 53.12 million tons of the total bauxite imports, representing 78.38% of the total, with a year-on-year increase of 42.2% [1] Group 5 - The International Aluminium Institute (IAI) reports that global primary aluminum production in April 2025 was 6.033 million tons, compared to 5.901 million tons in the same month last year [2]