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),0.87,2.99,2.06,1.26,0.44,2.45,1.79,1.14,0.51,2.51,1.81,1.15,0.52,2.76,2.07,1.32,0.59,2.98,--,1.44,--,3.28,3.46,3.41,3.1, 应收账款周转天数(天),103.59,120.42,130.8,143.05,206.19,146.84,150.69,157.96,175.44,143.21,149.2,156.56,174.66,130.39,130.56,135.88,152.36,120.86,--,124.92,--,109.79,104.06,105.67,116.28, 存货周转率(次),1.49,5.16,3.02,1.94,0.71,3.39,2.09,1.33,0.6,2.63,1.79,1.24,0.57,2.34,1.3,0.81,0.36,1.78,--,0.74,--,1.58,1.88,2.2,2.16, 固定资产周转率(次),--,2.98,--,1.38,--,2.14,--,0.96,--,1.99,--,0.92,--,1.87,--,0.84,--,2.05,--,--,--,3.78,--,--,0.82, 总资产周转率(次),0.2,0.65,0.45,0.36,0.11,0.59,0.43,0.27,0.12,0.51,0.36,0.22,0.1,0.58,0.42,0.27,0.15,0.74,--,0.35,--,0.78,0.8,--,0.82, 存货周转天数(天),60.61,69.71,89.42,92.86,126.8,106.3,129.37,135.23,149.35,136.64,151.02,144.8,157.98,154.1,207.77,222.55,248,201.95,--,242.1,--,227.72,191.24,163.38,166.75, 总资产周转天数(天),449.33,551.98,594.32,506.04,805.01,613.29,633.21,675.42,781.93,700.25,746.68,812.64,934.58,619.51,644.55,672.9,590.55,484.91,--,521.13,--,459.07,447.59,--,438.28, 流动资产周转率(次),0.29,1.03,0.68,0.65,0.21,1.06,0.76,0.46,0.19,0.83,0.57,0.34,0.15,1.01,0.73,0.47,0.36,1.75,--,0.82,--,1.58,1.27,1.26,132.99, 流动资产周转天数(天),308.96,349.07,398.11,275.86,424.53,339.05,353.03,394.3,463.68,436.26,470.14,531.76,613.08,355.49,367.6,385.11,251.4,205.43,--,218.39,--,227.59,283.82,286.28,2.71, 经营现金净流量对销售收入比率(%),-0.08,0.23,0.13,0.08,-0.16,0.15,0.1,0.06,-0.01,0.14,0.07,0.05,-0.1,0.17,0.11,0.08,-0.04,0.16,0.08,0.12,-0.09,0.14,0.13,0.13,0.12, 资产的经营现金流量回报率(%),-0.02,0.11,0.04,0.03,-0.02,0.09,0.04,0.02,-0,0.07,0.02,0.01,-0.01,0.07,0.04,0.02,-0.01,0.11,--,0.04,--,0.1,0.09,0.08,0.1, 经营现金净流量与净利润的比率(%),-0.27,0.79,0.41,0.29,-0.99,0.82,0.51,0.35,-0.07,0.75,0.36,0.27,-0.94,0.86,0.59,0.48,-0.33,0.85,0.44,0.71,-0.87,0.75,0.55,0.78,0.82, 经营现金净流量对负债比率(%),-0.1,0.96,0.48,0.17,-0.15,1,0.52,0.21,-0.01,0.74,0.3,0.12,-0.12,0.8,0.44,0.21,-0.06,0.82,--,0.29,--,0.61,0.84,0.29,0.41, 现金流量比率(%),-10.6,102.73,49,17.65,-15.33,106.23,57.94,23.17,-1.28,83.36,34.43,13.88,-14.04,93.67,52.94,25.75,-8.79,104.96,--,38.96,--,80.34,87.39,33.7,43.9,