报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2018-06-30,2018-03-31,2017-12-31,2017-09-30,2017-06-30,2017-03-31,2016-12-31,2016-09-30,2016-06-30,2016-03-31,2015-12-31,2015-09-30,2015-06-30,2015-03-31,2014-12-31,2014-09-30,2014-06-30,2013-12-31,2012-12-31,2011-12-31, 应收账款周转率(次),2.09,8.17,6.03,4.05,1.36,5.33,4,2.51,1.24,5.46,4.17,2.76,1.38,7.54,6,4.61,2.44,11.58,8.53,5.92,2.92,14.3,11.43,7.57,2.88,16.31,--,--,9.19,6.33,4.67, 应收账款周转天数(天),43.05,44.06,44.76,44.42,66.4,67.48,67.52,71.64,72.47,65.88,64.73,65.13,65.05,47.72,45,39.03,36.92,31.09,31.67,30.38,30.8,25.17,23.62,23.79,31.24,22.07,--,--,39.17,56.83,77.05, 存货周转率(次),0.51,2.9,2.5,1.78,0.7,3.7,2.32,1.64,1,4.34,2.84,2.04,1,4.23,2.41,1.63,0.74,2.69,2,1.47,0.61,2.84,1.96,1.33,0.61,2.66,--,--,2.43,2.51,1.92, 固定资产周转率(次),--,5.93,--,3.58,--,5.19,--,2.51,--,5.31,--,3.03,--,4.87,--,1.88,--,2.95,--,1.62,--,2.89,--,1.32,0.55,2.62,--,--,1.9,--,0.7, 总资产周转率(次),0.16,0.78,0.61,0.47,0.17,0.74,0.52,0.35,0.17,0.75,0.55,0.37,0.2,0.85,0.58,0.38,0.16,0.61,0.44,0.3,0.12,0.71,0.49,0.33,0.19,0.98,--,--,0.78,0.81,0.7, 存货周转天数(天),177.8,124.08,108.09,100.94,128.79,97.19,116.32,109.54,89.65,82.86,94.98,88.38,90.15,85.02,112.06,110.36,120.98,133.85,134.73,122.34,147.95,126.83,137.68,135.31,147.2,135.59,--,--,148.28,143.28,187.19, 总资产周转天数(天),566.39,464.28,445.03,380.55,531.6,489.46,523.36,510.78,544.79,478.47,493.69,484,440.53,424.38,462.8,474.18,569.98,593.37,607.01,607.9,721.73,507.33,555.21,542.5,468.99,367.61,--,--,464.46,447.09,514.51, 流动资产周转率(次),0.3,1.4,0.95,0.74,0.27,1.18,0.83,0.55,0.25,1.21,0.88,0.58,0.37,1.36,0.94,0.6,0.24,0.85,0.68,0.47,0.21,1.07,0.75,0.48,0.41,1.77,--,--,1.48,1.56,134.91, 流动资产周转天数(天),300.3,256.85,284.33,242.26,333.95,305.24,326.72,330.21,357.14,297.87,308.15,311.47,242.92,264.49,288.28,297.96,378.31,425.93,398.05,385.93,432.9,336.92,361.74,378.23,220.7,202.97,--,--,242.92,230.9,2.67, 经营现金净流量对销售收入比率(%),0.03,0.38,0.33,0.52,0.89,0.15,0.1,0.1,0.05,0.15,0.05,0.06,0.11,0.15,0.03,0.09,0.12,0.2,0.22,0.21,0.17,0.31,0.25,0.22,0.05,0.29,0.26,0.27,0.41,0.33,0.13, 资产的经营现金流量回报率(%),0,0.25,0.17,0.22,0.14,0.11,0.05,0.03,0.01,0.09,0.02,0.02,0.02,0.1,0.02,0.03,0.02,0.11,0.09,0.06,0.02,0.17,0.09,0.06,0.01,0.25,--,--,0.3,0.25,0.09, 经营现金净流量与净利润的比率(%),0.13,1.72,1.25,1.85,5.02,0.73,0.44,0.43,0.3,0.71,0.22,0.26,0.67,0.75,0.15,0.36,0.62,0.77,0.72,0.64,0.65,1.05,0.86,0.72,0.2,1.06,0.9,0.92,1.71,1.98,0.75, 经营现金净流量对负债比率(%),0.02,0.81,0.59,0.83,0.48,0.64,0.28,0.19,0.04,0.46,0.12,0.09,0.08,0.33,0.05,0.11,0.07,0.74,0.84,0.52,0.19,1.35,0.87,0.5,0.05,1.08,--,--,1.06,0.62,0.2, 现金流量比率(%),2.78,133.83,104.72,85.64,50.22,69.88,30.86,19.63,4.48,47.29,14.07,10.15,8.83,44.4,6.72,16.38,12.01,79.85,92.48,57.64,22.29,153.4,101.62,56.24,5.42,124.91,--,--,128.94,74.08,23.7,