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),4.97,25.88,15.93,11.65,4.94,29.95,16.56,11.29,4.55,28.92,--,9.3,5.64,31.06,18.56,11.18,5.89,29.2,--,--,42.6,52.71,52.02, 应收账款周转天数(天),18.1,13.91,16.95,15.45,18.21,12.02,16.3,15.95,19.78,12.45,--,19.35,15.96,11.59,14.55,16.1,15.27,12.33,--,--,8.45,6.83,6.92, 存货周转率(次),1.05,4.92,3.4,2.02,0.88,4.25,3.34,2.07,0.89,3.19,2.51,1.41,0.54,2.88,2.41,1.65,0.62,2.91,--,--,3.7,3.86,4.72, 固定资产周转率(次),--,3.12,--,1.65,--,4.19,--,2.06,--,3.82,--,3.96,--,3.68,--,1.82,0.73,3.17,--,--,2.98,--,0.45, 总资产周转率(次),0.1,0.54,0.39,0.28,0.12,0.64,0.48,0.3,0.12,0.51,0.39,0.23,0.09,0.51,0.39,0.27,0.11,0.54,--,--,0.62,0.48,0.45, 存货周转天数(天),85.68,73.18,79.43,89.25,102.4,84.78,80.84,87.01,100.98,112.79,107.72,127.42,166.27,124.87,112.24,109.1,145.47,123.6,--,--,97.25,93.3,76.2, 总资产周转天数(天),916.5,667.41,697.85,634.03,744.42,559.53,559.35,606.88,745.65,701.62,693.91,785.68,991.19,699.71,691.24,661.76,808.63,661.64,--,--,579.99,750,799.82, 流动资产周转率(次),0.25,1.47,1.04,1.03,0.42,2.01,1.42,0.82,0.33,1.45,1.09,0.65,0.26,1.58,1.19,0.96,0.39,1.89,--,--,2.36,1.9,177.29, 流动资产周转天数(天),358.71,244.91,260.64,173.96,214.69,179.5,189.81,219.03,269.95,247.8,247.82,276.46,348.43,228.18,226.91,188.42,229.24,190.42,--,--,152.32,189.47,2.03, 经营现金净流量对销售收入比率(%),-0.13,0.14,0.13,0.09,-0.1,0.16,0.17,0.21,0.02,0.01,0.04,-0.04,-0.28,0.1,0.1,0.12,-0.07,0.17,0.19,0.17,0.14,0.12,0.04, 资产的经营现金流量回报率(%),-0.01,0.07,0.04,0.03,-0.01,0.1,0.08,0.06,0,0.01,0.01,-0.01,-0.03,0.05,0.04,0.03,-0.01,0.09,--,--,0.09,0.06,0.02, 经营现金净流量与净利润的比率(%),-1.46,1.79,1.16,0.88,-1.34,1.6,1.57,2.98,1.08,0.18,0.57,-0.84,-15.3,0.9,0.71,0.76,-0.52,1.53,1.4,1.39,1.3,1.89,0.03, 经营现金净流量对负债比率(%),-0.05,0.32,0.19,0.08,-0.04,0.35,0.25,0.19,0.01,0.02,0.06,-0.04,-0.11,0.23,0.18,0.14,-0.03,0.31,--,--,0.33,0.18,0.06, 现金流量比率(%),-7.14,42.09,24.56,10.75,-5.5,42.49,30.51,22.46,0.79,2.48,7.07,-4.71,-14.67,30.96,24.74,19.13,-4.07,40.46,--,--,47.54,25.11,8.83,