This dataset is a market activity dataset, where each market represents a consumption mix of products within a specific region, connecting suppliers with consumers of the same product within that region. The market covers producers and importers of the product within the same geographical area. In addition, the market also takes into account the transport, freight of the product to the consumer, and losses during transportation.

Iron ore is the primary raw material for steel production, and steel is one of the core materials for modern industry and infrastructure construction. China is the worlds largest steel producer with a huge demand for iron ore. However, Chinas iron ore resources are characterized by low grade and high impurities, which requires most of the iron ore to be processed by mineral dressing before use. Magnetic separation technology is the main technique in the iron ore dressing in China, especially suitable for magnetite and vanadium-titanomagnetite ore. For non-magnetic or weakly magnetic ores such as Hematite ore, limonite, and siderite, it is usually necessary to combine several processes including roasting, heavy media separation, strong magnetic separation, and flotation, to improve the yield and grade of iron concentrate.