报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2018-06-30,2018-03-31,2017-12-31,2017-09-30,2017-06-30,2017-03-31,2016-12-31,2016-09-30,2016-06-30,2016-03-31,2015-12-31,2014-12-31,2013-12-31,2012-12-31, 应收账款周转率(次),1.39,4.58,3.57,2.01,0.93,4.32,3.54,2.45,1.16,4.68,3.43,2.3,1,4.5,3.48,2.68,1.28,7.63,--,--,--,9.24,10.58,5.52,4.73, 应收账款周转天数(天),64.91,78.65,75.66,89.44,97.01,83.28,76.36,73.39,77.92,76.88,78.81,78.26,90.45,79.93,77.49,67.25,70.24,47.2,--,--,--,38.94,34.02,65.25,76.09, 存货周转率(次),1.05,5.69,4.28,3.2,1.3,9.97,6.91,4.72,3.18,10.42,5.59,4.27,1.88,7.43,4.09,3.14,1.91,8.02,--,--,--,7.29,8.03,5.58,6.71, 固定资产周转率(次),--,59.53,--,32.62,--,69.08,--,39.85,--,71.34,--,35.76,--,51.52,--,16.77,--,38.66,--,--,--,--,--,--,1.13, 总资产周转率(次),0.27,1.1,0.82,0.53,0.24,1.25,1.17,0.78,0.41,1.54,1.07,0.73,0.33,1.27,0.84,0.51,0.24,1.46,--,--,--,1.87,--,--,1.13, 存货周转天数(天),85.92,63.24,63.15,56.29,68.98,36.11,39.09,38.15,28.27,34.56,48.26,42.14,47.76,48.48,66.07,57.35,47.19,44.89,--,--,--,49.38,44.85,64.48,53.65, 总资产周转天数(天),333.46,326.38,328.11,338.41,382.98,287.33,231.09,230.65,221.78,233.04,252.03,247.8,270.92,284.25,321.74,351.08,369.16,246.56,--,--,--,192.24,--,--,318.7, 流动资产周转率(次),0.34,1.33,0.95,0.59,0.26,1.39,1.33,0.88,0.44,1.7,1.17,0.79,0.36,1.38,0.88,0.54,0.26,1.54,--,--,--,1.97,2.58,1.37,119.43, 流动资产周转天数(天),262.39,271.02,283.94,302.72,347.49,259.82,202.98,204.73,203.3,211.21,231.46,227.01,246.85,260.7,305.19,331.98,351.84,233.52,--,--,--,182.32,139.68,262.75,3.01, 经营现金净流量对销售收入比率(%),0.09,0.12,0.1,0.06,0.09,0.12,0.17,0.26,0.34,-0.01,-0.03,-0.11,0.03,-0.22,-0.37,-0.35,-0.6,0.14,0.01,-0.11,-0.49,0.14,0.17,0.13,0.05, 资产的经营现金流量回报率(%),0.02,0.12,0.07,0.03,0.02,0.11,0.18,0.18,0.14,-0.01,-0.03,-0.07,0.01,-0.2,-0.24,-0.15,-0.12,0.18,--,--,--,0.24,0.32,0.18,0.05, 经营现金净流量与净利润的比率(%),0.99,1.19,0.9,0.58,0.9,1.31,1.92,2.73,3.66,-0.1,-0.45,-2.56,0.99,-2.8,-4.61,-4.48,-8.35,1.21,0.07,-1.14,-7.34,1.32,1.92,2.34,0.8, 经营现金净流量对负债比率(%),0.04,0.25,0.16,0.06,0.05,0.3,0.32,0.32,0.26,-0.02,-0.04,-0.12,0.02,-0.5,-0.92,-0.73,-0.57,0.37,--,--,--,0.55,0.75,0.28,0.09, 现金流量比率(%),4.52,24.92,16.42,6.07,4.61,29.85,32.4,32.02,25.62,-1.63,-4.52,-11.76,2.26,-51.13,-95.79,-78.01,-60.5,38.26,--,--,--,54.74,77.61,29.3,9.09,