报告日期,2021-09-30,2021-06-30,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2018-09-30,2017-12-31,2016-12-31, 应收账款周转率(次),13.12,3.6,4.03,9.21,7.12,4.96,1.36,5.2,3.89,2.45,--,5.43,--,5.22,4.69, 应收账款周转天数(天),20.58,49.99,22.32,39.07,37.92,36.29,66.12,69.21,69.46,73.49,--,66.33,--,69.03,76.8, 存货周转率(次),3.98,2.93,1.1,2.95,1.15,0.93,0.44,2.51,1.88,1.23,--,2.35,--,2.46,2.09, 固定资产周转率(次),--,38.79,--,38.23,--,11.32,--,6.02,5.23,3.45,--,7.07,--,7.26,0.76, 总资产周转率(次),1.37,1.13,0.52,1.66,1.03,0.83,0.15,1.05,0.8,0.52,--,0.96,--,0.9,0.76, 存货周转天数(天),67.92,61.52,81.66,122.04,234.03,193.01,204.87,143.27,143.68,146.48,--,153.22,--,146.35,171.98, 总资产周转天数(天),197.69,159.74,171.72,216.89,261.91,215.75,598.4,342.56,336.16,347.89,--,375.86,--,401.61,476, 流动资产周转率(次),1.49,1.21,0.56,1.82,1.19,0.95,0.17,1.46,1.14,0.73,--,1.35,--,1.29,107.94, 流动资产周转天数(天),181.33,148.75,159.55,197.29,227.62,189.12,514.87,246.64,236.95,247.83,--,266.61,--,279.81,3.34, 经营现金净流量对销售收入比率(%),0.57,0.26,0.57,0.55,0.49,0.44,1.3,0.15,0.12,0.02,0.03,0.16,0.04,0.15,0.06, 资产的经营现金流量回报率(%),0.58,0.22,0.26,0.5,0.3,0.23,0.13,0.15,0.1,0.01,--,0.13,--,0.13,0.05, 经营现金净流量与净利润的比率(%),1.07,0.5,1.08,1.07,0.8,0.7,3.14,0.7,0.57,0.09,0.21,0.69,0.15,1.03,0.33, 经营现金净流量对负债比率(%),3.02,0.7,0.97,1.6,1.62,1.15,0.56,0.5,0.38,0.03,--,0.34,--,0.28,0.08, 现金流量比率(%),309.58,70.77,97.53,160.85,166.42,118.54,59.85,59.24,42.39,2.84,--,36.55,--,28.79,8.61,