整理：每日期货市场要闻速递（6月5日）

Group 1 - The Zhengzhou Commodity Exchange announced adjustments to the hedging position limits for various products, including an increase in the combined limits for hedging and speculative positions for 14 products, including PTA [1] - Reports indicated that Mongolia's coal resource tax might be raised to 20%, but the Mongolian Tax Authority confirmed that no official decision regarding changes to coal resource taxes or export taxes has been made [1] - In Tangshan, some steel mills plan to reduce the prices of various types of coke by 50 to 75 yuan per ton, effective from June 6, 2025 [1] - National building materials inventory decreased by 2.63% to 5.5047 million tons, while factory inventory fell by 0.92% to 3.2615 million tons, and production dropped by 0.90% to 4.2193 million tons [1] Group 2 - The Brazilian National Grain Exporters Association (Anec) estimates that soybean exports in June will be 12.55 million tons, down from 13.83 million tons in the same month last year, and lower than May's 14.20 million tons [2] - A foreign media survey predicts that U.S. net soybean export sales for the 2024/25 marketing year will range between 100,000 to 500,000 tons, while for the 2025/26 marketing year, it will be between 0 to 100,000 tons [2] - A Reuters survey forecasts that Malaysia's palm oil inventory for May 2025 will be 2.01 million tons, a 7.74% increase from April, with production expected to rise by 3% to 1.74 million tons and exports by 17.9% to 1.30 million tons [2] - A commodity research institution reported that Indonesia's palm oil production for the 2024/2025 fiscal year is expected to be 48.8 million tons, while Malaysia's is projected at 19 million tons, both remaining unchanged from previous estimates [2] Group 3 - A large lead recycling plant in East China has resumed production, but output remains unstable due to ongoing environmental inspections [3] - A zinc smelting plant in South China is undergoing maintenance for 10 to 15 days, which is expected to impact around 2,000 tons of production [3]