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Report Industry Investment Rating - Not provided in the given content Core Viewpoints of the Report - The iron ore inventory at the 15 ports monitored by Steel Union has been continuously rising, with a week-on-week increase of 174,420 tons and an expanding growth rate [1]. - The inventory increase is mainly in mainstream varieties. Among them, the medium-grade Australian powder and Australian lump increased by 114,130 tons and 40,670 tons respectively, and the pellet ore increased by 10,660 tons, while the high-grade Australian powder decreased by 35,320 tons [1]. - In general, the iron ore port inventory continues to rise and the growth rate expands, indicating that industrial contradictions are accumulating and there are no structural contradictions [1]. Summary by Category Inventory Quantity and Change - **Total Inventory**: The current inventory is 11,422,200 tons, a week-on-week increase of 174,420 tons (1.55%), and a month-on-month decrease of 1,339,850 tons (-10.50%) [1]. - **High-grade Australian Powder**: The current inventory is 1,618,360 tons, a week-on-week decrease of 35,320 tons (-2.14%), and a year-on-year decrease of 719,490 tons (-30.78%) [1]. - **Brazilian Powder Ore**: The current inventory is 2,072,310 tons, a week-on-week increase of 6,570 tons (0.32%), and a year-on-year increase of 518,240 tons (33.35%) [1]. - **Medium-grade Australian Powder**: The current inventory is 714,300 tons, a week-on-week increase of 114,130 tons (19.02%), and a month-on-month decrease of 46,600 tons (-6.12%) [1]. - **Australian Lump**: The current inventory is 1,003,890 tons, a week-on-week increase of 40,670 tons (4.22%), and a year-on-year increase of 109,850 tons (12.29%) [1]. - **Pellet Ore**: The current inventory is 36,730 tons, a week-on-week increase of 10,660 tons (40.89%), and a year-on-year decrease of 76,810 tons (-67.65%) [1].