报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2018-12-31,2018-06-30,2017-12-31,2017-09-30,2017-06-30,2016-12-31,2016-06-30,2015-12-31,2014-12-31,2013-12-31, 应收账款周转率(次),1.37,5.18,3.87,2.38,--,5.31,--,2.52,6.25,--,6.45,4.7,2.9,5.51,2.46,5.38,4.87,3.99, 应收账款周转天数(天),65.51,69.45,69.79,75.48,--,67.8,--,71.45,57.65,--,55.77,57.43,62.17,65.3,73.2,66.98,73.96,90.3, 存货周转率(次),0.98,4.44,3.05,2.11,--,4.73,--,2.39,4.62,2.21,4.12,3.2,2.2,4,1.89,4.47,3.97,4.12, 固定资产周转率(次),--,--,--,2.01,--,--,--,--,--,--,--,--,--,--,--,--,--,1.12, 总资产周转率(次),0.17,0.79,--,0.44,--,--,--,--,--,--,--,--,--,--,--,--,--,1.12, 存货周转天数(天),91.92,81.01,88.52,85.21,--,76.18,--,75.22,77.97,81.6,87.3,84.48,81.71,89.97,95.26,80.49,90.75,87.4, 总资产周转天数(天),541.19,456.62,--,406.41,--,--,--,--,--,--,--,--,--,--,--,--,--,320.48, 流动资产周转率(次),0.25,1.24,0.86,0.75,--,1.7,--,0.9,1.99,0.95,1.9,1.36,0.81,1.83,1.02,2.24,1.82,156.55, 流动资产周转天数(天),353.63,290.67,312.68,239.84,--,211.59,--,201.09,180.59,189.43,189.69,197.82,222.25,196.61,176.96,161.03,197.87,2.3, 经营现金净流量对销售收入比率(%),-0.16,0.02,-0.01,0.04,-0.3,0.08,0.08,0.05,0.06,0.05,0.06,0.08,0.11,0.05,0.08,0.02,0.08,0.06, 资产的经营现金流量回报率(%),-0.03,0.01,-0.01,0.02,--,0.08,--,0.03,0.07,0.03,0.08,0.07,0.06,0.05,0.06,0.03,0.1,0.07, 经营现金净流量与净利润的比率(%),-3.12,0.28,-0.19,0.6,-5.39,0.95,0.96,0.62,0.79,0.64,0.91,1.05,1.34,0.53,0.64,0.23,1.22,4.77, 经营现金净流量对负债比率(%),-0.09,0.05,-0.03,0.07,--,0.32,--,0.15,0.29,0.11,0.26,0.26,0.25,0.2,0.18,0.06,0.14,0.09, 现金流量比率(%),-15.08,7.34,-4.21,10.16,--,41.73,--,15.59,29.27,11.4,25.87,26.1,25.31,20.6,18.35,6.31,14.46,9.97,