报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2018-06-30,2018-03-31,2017-12-31,2017-09-30,2017-06-30,2017-03-31,2016-12-31,2016-09-30,2016-06-30,2015-12-31,2014-12-31,2013-12-31, 应收账款周转率(次),0.75,1.68,1.32,0.89,0.41,2.79,1.96,1.31,0.59,3.04,2.06,1.42,0.66,3.56,2.32,1.6,--,3.77,--,--,4.55,5.47,4.56, 应收账款周转天数(天),120.37,213.9,203.91,203.18,221.78,128.94,138.08,137.47,153.69,118.46,131.26,126.44,136.88,100.99,116.29,112.68,--,95.49,--,--,79.13,65.79,78.94, 存货周转率(次),0.85,2.44,2,1.26,0.56,5.31,3,2.51,0.98,6.26,3.03,2.89,1.2,7.32,4.32,3.26,--,6.55,--,--,4.67,3.74,3.18, 固定资产周转率(次),--,2.66,--,1.52,--,4.05,--,1.83,--,3.62,--,1.58,--,3.46,--,--,--,3.07,--,--,3.87,--,1.11, 总资产周转率(次),0.11,0.28,0.33,0.2,0.1,0.62,0.43,0.29,0.13,0.69,0.49,0.33,0.15,0.9,0.61,0.45,--,0.94,--,--,0.96,1.14,1.11, 存货周转天数(天),105.92,147.25,135.06,142.64,161.7,67.82,89.98,71.79,91.63,57.48,89.09,62.37,74.88,49.21,62.51,55.14,--,54.99,--,--,77.11,96.32,113.35, 总资产周转天数(天),838.77,1290.32,824.18,878.91,929.75,579.99,625.72,617.5,682.34,522.88,552.15,540.05,592.5,400.8,446.13,400.98,--,385.03,--,--,376.81,314.63,325.7, 流动资产周转率(次),0.15,0.38,0.44,0.28,0.13,0.9,0.61,0.44,0.2,0.99,0.65,0.44,0.2,1.26,0.85,0.68,--,1.4,--,--,1.39,1.63,156.9, 流动资产周转天数(天),613.5,943.89,606.88,645.86,688.6,402.23,443.5,411.24,449.78,363.45,414.56,406.6,450.45,285.67,316.79,265.1,--,256.78,--,--,259.18,220.2,2.29, 经营现金净流量对销售收入比率(%),-0.56,-0.11,-0.39,-0.5,-1.05,-0,-0.03,-0.03,-0.14,0.05,-0.07,0.04,-0.21,0.1,-0.01,0.12,-0.53,0.08,-0.16,-0.2,0.01,-0.02,0.07, 资产的经营现金流量回报率(%),-0.06,-0.03,-0.12,-0.1,-0.1,-0,-0.01,-0.01,-0.02,0.03,-0.03,0.01,-0.03,0.08,-0.01,0.05,--,0.08,--,--,0.01,-0.02,0.07, 经营现金净流量与净利润的比率(%),-9.91,--,-3.87,-4.17,-8.62,-0.02,-0.22,-0.17,-0.95,0.35,-0.47,0.22,-1.73,0.7,-0.06,0.7,-4.68,0.57,-1.13,-1.32,0.11,-0.16,1.01, 经营现金净流量对负债比率(%),-0.13,-0.07,-0.3,-0.22,-0.27,-0,-0.04,-0.02,-0.05,0.08,-0.12,0.05,-0.16,0.41,-0.02,0.22,--,0.35,--,--,0.03,-0.04,0.13, 现金流量比率(%),-19.31,-9.32,-59.51,-40.92,-31.71,-0.44,-4.21,-2.17,-5.12,8.19,-12.45,5.23,-16.42,42.43,-2.53,22.99,--,35.93,--,--,3.58,-4.22,13.17,