报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2019-03-31,2018-12-31,2017-12-31,2016-12-31,2015-12-31,2014-12-31, 应收账款周转率(次),0.58,1.9,1.09,0.63,--,1.5,--,0.95,--,--,3.75,5.72,8.89,9.9, 应收账款周转天数(天),155.36,189.72,248.16,287.22,--,239.33,--,189.02,--,--,95.9,62.89,40.48,36.35, 存货周转率(次),11.7,1.9,1.46,0.87,--,1.28,--,0.72,0.4,2.14,2.27,1.81,1.15,1.04, 固定资产周转率(次),--,9.42,--,4.4,--,--,--,--,--,--,--,--,--,0.96, 总资产周转率(次),0.05,0.4,0.3,0.24,--,0.68,--,--,--,--,--,--,--,0.96, 存货周转天数(天),7.69,189.05,185.2,206.56,--,281.18,--,251.36,222.72,168.49,158.49,198.65,312.53,344.7, 总资产周转天数(天),1669.76,892.64,887.57,757.26,--,527.09,--,--,--,--,--,--,--,375.39, 流动资产周转率(次),0.06,0.43,0.32,0.25,--,0.73,--,0.43,0.2,1.09,1.35,1.54,1.1,96.78, 流动资产周转天数(天),1573.43,836.82,840.6,706.16,--,493.15,--,422.04,443.35,330.15,266.55,234.47,326.12,3.72, 经营现金净流量对销售收入比率(%),-0.99,-0.05,-0.19,-0.17,-0.51,-0.22,-0.4,-0.56,-0.8,0.11,0.09,0.04,-0.12,0.1, 资产的经营现金流量回报率(%),-0.05,-0.02,-0.05,-0.04,--,-0.14,--,-0.21,-0.15,0.09,0.09,0.05,-0.14,0.1, 经营现金净流量与净利润的比率(%),-30.73,-0.35,-1.38,-0.97,-3.7,-1.12,-2.3,-3.42,-6.11,0.53,0.65,0.33,-1.29,1.03, 经营现金净流量对负债比率(%),-0.26,-0.07,-0.16,-0.09,--,-0.3,--,-0.46,-0.33,0.16,0.16,0.09,-0.23,0.13, 现金流量比率(%),-25.91,-6.61,-16.35,-9.01,--,-29.7,--,-46,-32.92,15.79,16.64,9.38,-23.22,12.78,