报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2018-06-30,2018-03-31,2017-12-31,2017-09-30,2017-06-30,2017-03-31,2016-12-31,2016-09-30,2015-12-31,2015-09-30,2014-12-31,2013-12-31,2012-12-31, 应收账款周转率(次),0.87,3.87,2.73,1.7,0.7,3.64,2.6,1.71,0.82,3.76,2.65,1.74,0.81,4.03,2.91,1.95,--,4.61,--,4.69,3.26,4.85,4.78,4.2, 应收账款周转天数(天),102.97,93.11,99,106.17,128.02,98.97,103.66,105.15,110.11,95.87,102.06,103.7,110.74,89.44,92.9,92.27,--,78.04,--,76.77,82.81,74.26,75.26,85.76, 存货周转率(次),5.19,21.46,15.65,10.31,4.28,21.33,15.1,10.62,5.58,24.96,17.02,11.49,6.16,25.54,16.96,12.26,--,25.05,--,21.82,16.19,17.78,15.02,15.03, 固定资产周转率(次),--,7.21,--,3.23,--,4.73,--,2.25,--,4.18,--,1.95,--,4.2,--,2.06,--,4.53,--,5.86,--,--,--,1.55, 总资产周转率(次),0.37,1.49,1.09,0.7,0.26,1.26,0.94,0.62,0.29,1.24,0.92,0.6,0.28,1.27,0.92,0.65,--,1.38,--,1.41,--,1.63,--,1.55, 存货周转天数(天),17.33,16.78,17.26,17.46,21.01,16.88,17.88,16.95,16.13,14.43,15.86,15.66,14.62,14.09,15.92,14.69,--,14.37,--,16.5,16.68,20.25,23.97,23.95, 总资产周转天数(天),244.63,240.95,248.12,257.14,341.3,285.33,287.45,289.48,310.88,289.51,294.82,298.46,325.73,284.29,294.09,275.4,--,260.93,--,255.74,--,220.64,--,231.71, 流动资产周转率(次),0.51,2.18,1.59,1.05,0.41,2.03,1.51,1.01,0.47,2.11,1.56,1.05,0.49,2.24,1.58,1.2,--,2.48,--,2.53,1.75,2.58,2.4,206.86, 流动资产周转天数(天),175.71,165,169.61,171.79,217.65,176.96,179.21,178.57,190.23,170.49,173.15,172.13,184.96,160.5,171.31,149.9,--,145.43,--,142.48,154.23,139.59,149.96,1.74, 经营现金净流量对销售收入比率(%),0.06,0.18,0.16,0.07,-0.1,0.13,0.09,0.06,-0.01,0.12,0.08,0.05,-0.04,0.07,0.06,0.03,-0.06,0.09,0.07,0.09,0.07,0.12,0.06,0.09, 资产的经营现金流量回报率(%),0.02,0.23,0.15,0.04,-0.03,0.15,0.08,0.04,-0,0.13,0.07,0.03,-0.01,0.09,0.05,0.02,--,0.11,--,0.11,0.06,0.16,0.09,0.14, 经营现金净流量与净利润的比率(%),0.29,0.97,0.86,0.41,-2.13,1.59,1.12,0.9,-0.26,2.07,1.44,1.1,-3.91,1.36,0.99,0.66,-7.77,1.57,1.22,1.53,1.12,5.64,1.26,1.73, 经营现金净流量对负债比率(%),0.05,0.55,0.32,0.09,-0.05,0.32,0.17,0.07,-0.01,0.26,0.13,0.06,-0.03,0.18,0.09,0.04,--,0.19,--,0.21,0.12,0.23,0.13,0.21, 现金流量比率(%),6.06,65.89,40.42,11.46,-7.47,40.11,21.7,9.1,-0.76,36.26,19.23,9.31,-3.87,28.31,14.15,5.41,--,28.77,--,27.98,16.77,29.26,12.95,21.66,