According to the statistical data of China Iron and Steel Association, in the middle of June 2021, the steel inventory of key iron and steel enterprises was 15.69970 million tons, an increase of 1.4673 million tons month-on-month, up 10.31%;An increase of 2.2832 million tons or 17.02% over that of the end of last month;4.076,000 tons more than at the beginning of the year, an increase of 35.07 percent;That is an increase of 2.77800 million tons over the same period last year, up 21.50%.