On May 29: The SM2509 contract opened at 5,590 yuan/mt, fluctuated downward after the morning session, and finally closed at 5,530 yuan/mt, down 1.50%. The daily high was 5,616 yuan/mt, and the low was 5,492 yuan/mt. Trading volume reached 375,707 lots, with open interest at 466,577. On the raw material side, manganese ore inventory at ports continued to build up, alloy plants showed sluggish purchasing interest in manganese ore, and spot prices dropped slightly. On the spot side, SiMn plants were less inclined to offer quotes before the holiday, and downstream steel mills showed sluggish purchasing interest in SiMn.
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![Before the holiday, the black chain is unlikely to see a trend-driven market [SMM Steel Industry Chain Weekly Report].](https://imgqn.smm.cn/usercenter/zUFfM20251217171748.jpg)

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