This dataset is a market activity dataset, representing a combination of markets for magnetite concentratein different regions of China, namely the magnetite concentratemarket group. Transport losses, modes of transport, and transport infrastructure are not included in this dataset; they are included in the individual provincial market datasets. Data sources include the Year Book of China Transportation & Communications, the China Energy Statistics Yearbook, the China Statistical Yearbook, and the General Administration of Customs customs statistical data, etc.