报告日期,2020-12-31,2019-12-31,2018-12-31,2017-12-31,2016-12-31,2015-12-31,2014-12-31,2013-12-31,2012-12-31,2011-12-31,2010-12-31,2009-12-31,2008-12-31,2007-12-31, 应收账款周转率(次),8.34,6.54,4.93,3.17,2.22,1.92,2.8,4.34,5.37,9.78,14.56,14.27,13.27,12.04, 应收账款周转天数(天),43.17,55.05,73.09,113.51,162.37,187.47,128.67,82.94,67.01,36.81,24.73,25.23,27.14,29.89, 存货周转率(次),2.24,2.21,1.96,1.45,1.11,0.99,1.34,2.02,2.11,2.78,3.27,3.1,3.53,3.83, 固定资产周转率(次),4.04,4.19,4.26,3.7,2.96,2.58,3.41,4.31,3.74,4.46,4.44,6.01,--,1.24, 总资产周转率(次),0.93,0.93,0.83,0.62,0.49,0.44,0.6,0.83,0.8,1.07,1.24,1.08,--,1.24, 存货周转天数(天),160.99,162.82,183.56,247.99,324.88,362.72,268.56,178.27,170.66,129.39,109.95,116.17,102.12,93.9, 总资产周转天数(天),387.56,387.85,433.11,579.52,733.65,816.14,597.11,432.54,452.38,337.71,291.03,333.89,--,289.65, 流动资产周转率(次),1.41,1.43,1.22,0.83,0.63,0.57,0.8,1.14,1.14,1.56,1.95,1.72,1.75,199.81, 流动资产周转天数(天),254.89,251.91,296.1,431.97,568.27,627.07,452.55,315.37,316.01,231.14,184.17,209.33,206.16,1.8, 经营现金净流量对销售收入比率(%),0.01,0.08,0.2,0.04,0.05,-0.01,0.01,-0.03,-0,-0.06,-0.02,0.08,0.07,0.02, 资产的经营现金流量回报率(%),0.01,0.07,0.15,0.02,0.02,-0,0.01,-0.02,-0,-0.05,-0.02,0.07,0.06,0.02, 经营现金净流量与净利润的比率(%),0.2,1.56,3.79,0.91,1.18,-0.18,0.3,-0.95,-0.11,-0.94,-0.36,1.57,1.61,0.4, 经营现金净流量对负债比率(%),0.02,0.11,0.26,0.04,0.04,-0.01,0.01,-0.04,-0.01,-0.09,-0.03,0.08,0.07,0.03, 现金流量比率(%),2.11,12.43,29.28,4.35,4.6,-0.7,0.85,-3.68,-0.59,-9.85,-3.16,8.77,7.48,2.72,