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),3.09,2.9,2.65,2.33,2.26,2.6,3.36,4.24,3.64,4.21,4.53,4.29,4.86,4.25, 应收账款周转天数(天),116.49,124.26,135.84,154.33,159.59,138.63,107.3,84.81,98.91,85.5,79.52,83.87,74.08,84.66, 存货周转率(次),4.26,4.39,4.28,4.04,4.11,3.56,3.57,3.72,2.99,3.72,3.72,3.87,5.32,5.16, 固定资产周转率(次),16.96,15.24,13.29,10.99,9.31,8.93,9.18,9.4,8.12,12.57,15.76,13.76,14.93,1.57, 总资产周转率(次),1,0.95,0.87,0.75,0.65,0.69,0.85,0.98,0.8,0.88,0.97,1.32,1.74,1.57, 存货周转天数(天),84.59,82.03,84.02,89.03,87.63,101.22,100.93,96.75,120.38,96.78,96.9,92.91,67.66,69.8, 总资产周转天数(天),359.17,378.75,415.99,480.32,550.29,522.42,424.33,365.97,450.11,408.35,372.36,272.89,207.04,229.07, 流动资产周转率(次),1.3,1.18,1.09,1.03,0.92,0.92,1.06,1.18,0.95,1.02,1.14,1.58,2.09,196.15, 流动资产周转天数(天),277.44,304.77,329.61,350.95,390.67,389.36,338.22,305.42,379.51,351.56,316.79,228.3,171.87,1.84, 经营现金净流量对销售收入比率(%),0.14,0.07,0.1,-0.07,0.08,0,0.05,-0,0.12,-0.07,-0.04,0.08,0.09,0.06, 资产的经营现金流量回报率(%),0.13,0.07,0.08,-0.05,0.05,0,0.04,-0,0.09,-0.06,-0.03,0.09,0.14,0.1, 经营现金净流量与净利润的比率(%),1.65,1.03,2.41,-1.23,0.78,0,0.9,-0.01,1.68,-0.95,-0.3,0.46,1.17,1.32, 经营现金净流量对负债比率(%),0.52,0.34,0.27,-0.19,0.16,0,0.13,-0.01,0.48,-0.28,-0.15,0.19,0.22,0.15, 现金流量比率(%),65.72,37.61,29.03,-20.76,16.97,0.08,13.05,-0.56,47.84,-28.09,-14.85,19.53,22.13,14.56,