Total domestic PP, PE major market inventory down to the end of last month, fell 3.95%, than the same period last year increased by 5.01%. Inventory structure, PP and PE stocks are down. PP stocks fell 0.76% last month, this month over the same period increased by 14.29% over the previous year; PE stocks fell 5.12% last month, is increased by 1.83% year-on-year. From the point of regional, south, north inventory decreased this month. Stocks fell 4.46% last month, the north over the same period increased by 0.49% over the previous year; Southern stock fell 3.69% last month, is increased by 7.43% year-on-year. Overall, the stock fell for the first time is a year period of April.