China's steel market distribution: from the provinces (autonomous regions, municipalities directly under the central government) distribution, the number of more than 100 million yuan metal material trading market in the top three are zhejiang, jiangsu and shandong, the number of 40, 37 and 28 respectively; Shanghai, jiangsu and zhejiang ranked the top three in terms of annual transaction volume, with 234.14 billion yuan, 229.472 billion yuan and 153.392 billion yuan respectively. The three regions' annual transaction volume totaled 617 billion yuan, accounting for 55.91 percent of the total transaction volume in the metal material trading market of more than 100 million yuan. This indicates that the Yangtze river delta region is the most prosperous area in China's steel consumption and the most active area in China's steel circulation. There are more than 10 metal material trading markets worth more than 100 million yuan in nine provinces (municipalities directly under the central government), including zhejiang, jiangsu, shandong, Shanghai, hebei, liaoning, tianjin, guangdong and chongqing. A total of five provinces (municipalities directly under the central government) have a metal material trading market with an annual turnover of more than 50 billion yuan. The five provinces (municipalities directly under the central government) are Shanghai, jiangsu, zhejiang, shandong and tianjin. A single metal materials market average turnover of more than 5 billion yuan of provinces (autonomous regions and municipalities directly under the central government) there are six, Shanghai, shanxi, Inner Mongolia, anhui, jiangsu, guangxi, single metal materials including Shanghai market average turnover of more than 10 billion yuan, which further confirms the Shanghai area of steel trading market is in the national steel circulation plays a "barometer" role.