报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2018-06-30,2018-03-31,2017-12-31,2016-12-31, 应收账款周转率(次),1.89,6.77,4.48,2.77,1.01,4.15,2.9,1.9,--,4.05,--,--,--,6.61,14.16, 应收账款周转天数(天),47.65,53.15,60.29,64.89,89.42,86.68,93.23,94.74,--,88.95,--,--,--,54.46,25.43, 存货周转率(次),0.27,1.15,0.78,0.46,0.18,0.75,0.55,0.36,--,0.63,--,--,--,0.81,0.56, 固定资产周转率(次),--,4.15,--,1.73,--,12.83,--,--,--,11.11,--,--,--,8.96,0.2, 总资产周转率(次),0.04,0.16,0.11,0.07,0.02,0.14,0.11,0.1,0.03,0.21,--,--,--,0.2,0.2, 存货周转天数(天),335.82,312.12,347.45,390.88,490.2,479.62,488.6,501.81,--,575.63,--,--,--,445.49,638.07, 总资产周转天数(天),2107.73,2282.82,2461.26,2748.09,4615.38,2524.54,2535.21,1729.11,2735.56,1742.5,--,--,--,1813.6,1809.05, 流动资产周转率(次),0.1,0.29,0.19,0.11,0.03,0.27,0.19,0.32,--,0.54,--,--,--,0.41,37.76, 流动资产周转天数(天),924.97,1229.93,1408.45,1618.71,2803.74,1352.37,1408.45,571.25,--,663.35,--,--,--,874.42,9.53, 经营现金净流量对销售收入比率(%),0.33,0.35,0.41,0.52,0.85,-0.14,-0.3,-0.03,0.39,0.16,-0,--,-0.22,0.05,0.74, 资产的经营现金流量回报率(%),0.01,0.05,0.04,0.03,0.02,-0.01,-0.02,-0,0.01,0.03,--,--,--,0.01,0.15, 经营现金净流量与净利润的比率(%),--,3.02,1.99,2.01,5.36,-1.26,-1.86,-0.15,6.48,0.76,-0.01,--,-1.4,0.2,11.69, 经营现金净流量对负债比率(%),0.08,0.4,0.37,0.28,0.13,-0.1,-0.17,-0.01,0.03,0.1,--,--,--,0.02,0.32, 现金流量比率(%),11.67,63.74,65.24,52.54,26.23,-17.88,-35.54,-1.71,--,29.24,--,--,--,6.65,56.59,