报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2017-12-31,2016-12-31, 应收账款周转率(次),7.67,29.26,23.24,--,--,30.13,--,14.69,8.02,33.38,28.62,23.55, 应收账款周转天数(天),11.73,12.3,11.62,--,--,11.95,--,12.25,11.22,10.78,12.58,15.29, 存货周转率(次),1.12,4.57,3.66,--,--,4.22,--,2.1,1.09,4.22,4.43,4.19, 固定资产周转率(次),--,7.53,--,--,--,--,--,--,--,--,--,1.12, 总资产周转率(次),0.28,1.11,0.81,0.49,0.23,1,--,--,--,--,--,1.12, 存货周转天数(天),80.34,78.72,73.8,--,--,85.24,--,85.67,82.28,85.29,81.21,85.83, 总资产周转天数(天),315.9,323.07,332.84,365.41,389.44,358.53,--,--,--,--,--,322.55, 流动资产周转率(次),0.44,1.65,1.21,--,--,1.43,--,0.64,0.33,1.54,1.77,173.12, 流动资产周转天数(天),206.61,217.86,223.7,--,--,252.4,--,281.12,271.17,233.19,203.15,2.08, 经营现金净流量对销售收入比率(%),0.03,0.01,0.07,0.11,0.2,0.08,0.13,0.11,0.18,0.01,0,0.01, 资产的经营现金流量回报率(%),0.01,0.01,0.06,0.05,0.04,0.08,--,0.05,0.04,0.01,0,0.01, 经营现金净流量与净利润的比率(%),0.81,0.18,1.84,3.12,6.31,2.43,4.39,5.35,8.89,0.41,0.11,1.94, 经营现金净流量对负债比率(%),0.02,0.01,0.1,--,--,0.13,--,0.08,0.07,0.02,0.01,0.02, 现金流量比率(%),1.75,1.4,10.44,--,--,13.71,--,8.18,7.3,2.18,0.72,2.39,