报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2018-06-30,2018-03-31,2017-12-31,2017-09-30,2017-06-30,2017-03-31,2016-12-31,2016-09-30,2016-06-30,2016-03-31,2015-12-31,2014-12-31,2013-12-31, 应收账款周转率(次),3.9,14.32,10.19,6.53,2.18,12.78,9.63,6.4,2.65,14.16,--,6.07,3.21,13.54,13.43,6.64,3.19,11.08,--,--,--,8.28,11.43,15.44, 应收账款周转天数(天),23.06,25.13,26.5,27.56,41.27,28.17,28.04,28.14,33.93,25.43,--,29.68,28.03,26.59,20.11,27.13,28.22,32.49,--,--,--,43.49,31.5,23.32, 存货周转率(次),1.29,4.77,3.94,2.62,0.89,5.64,4.28,3.48,1.34,5.63,4.3,2.82,1.14,5.04,3.69,2.4,0.98,4.37,--,--,--,3.63,4.08,3.54, 固定资产周转率(次),--,14.46,--,6.85,--,13.82,--,7.83,--,12.23,--,5.63,--,8.57,--,--,1.58,6.28,--,--,--,5.21,--,1.4, 总资产周转率(次),0.36,1.34,1.05,0.67,0.25,1.4,1.08,0.78,0.3,1.35,1,0.67,0.26,1.35,1.01,0.78,0.34,1.49,--,--,--,1.22,1.43,1.4, 存货周转天数(天),69.94,75.48,68.51,68.66,101.25,63.87,63.1,51.74,67.32,63.96,62.83,63.76,78.67,71.45,73.27,74.85,92.11,82.42,--,--,--,99.24,88.15,101.55, 总资产周转天数(天),251.26,268.02,257.98,269.62,363.49,256.5,250.65,232.11,304.26,266.23,271.11,268.78,352.66,266.43,267.33,231.18,266.04,241.46,--,--,--,294.57,252.3,256.79, 流动资产周转率(次),0.47,1.82,1.38,0.91,0.34,1.93,1.46,1.06,0.41,1.77,1.28,0.82,0.32,1.73,1.27,1.04,0.46,2.09,--,--,--,1.69,2,210.59, 流动资产周转天数(天),189.71,197.97,195.82,198.28,265.96,186.48,185.1,169.78,219.67,203.83,211.42,219.3,284.36,207.88,212.83,173.39,195.48,172.27,--,--,--,213.07,180.42,1.71, 经营现金净流量对销售收入比率(%),0.07,0.17,0.22,0.19,-0.04,0.13,0.13,0.11,0.02,0.08,0.05,0.02,-0.01,0.1,0.12,0.1,0.09,0.18,0.17,0.22,0.18,0.1,0.04,0.1, 资产的经营现金流量回报率(%),0.02,0.18,0.2,0.12,-0.01,0.17,0.13,0.08,0.01,0.1,0.05,0.01,-0,0.11,0.1,0.07,0.03,0.25,--,--,--,0.14,0.05,0.14, 经营现金净流量与净利润的比率(%),1.19,2.19,2.34,1.99,-0.4,2.43,2.19,1.74,0.57,1.79,0.97,0.25,-0.4,1.93,1.87,1.36,1.08,2.8,2.63,3.47,2.86,2.03,0.56,2.49, 经营现金净流量对负债比率(%),0.04,0.29,0.32,0.21,-0.02,0.29,0.22,0.15,0.01,0.2,0.09,0.02,-0.01,0.24,0.22,0.12,0.06,0.4,--,--,--,0.21,0.05,0.13, 现金流量比率(%),3.88,29.59,32.71,22.16,-1.66,29.8,22.89,15.66,1.19,20.07,8.99,1.92,-0.83,24.33,22.18,12.6,5.6,40.47,--,--,--,23.12,4.85,12.89,