报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-06-30,2018-12-31,2018-06-30,2017-12-31,2017-03-31,2016-12-31,2015-12-31,2014-12-31, 总资产利润率(%),1.25,2.92,2.58,2.38,--,5.27,--,--,5.36,2.81,7.52,-0.05,12.45,3.63,11.85, 主营业务利润率(%),26.88,28.3,29.27,100,24.27,21.61,19.02,100,21.79,23.63,29.94,23.69,38.11,40.93,37.23, 总资产净利润率(%),1.27,3.33,2.93,2.37,--,5.32,--,--,6.34,3.03,10.63,-0.07,15.43,4.95,11.85, 成本费用利润率(%),18.52,15.49,16.93,--,8.77,12.51,13.88,--,14.18,15.27,25.36,-0.86,27.87,10.69,21.95, 营业利润率(%),15.41,11.97,13.4,15.08,7.55,10.75,12.38,16.13,11.81,12.53,18.52,-2.23,20.98,8.14,16.78, 主营业务成本率(%),72.9,71.21,70.26,--,75.25,78,80.68,--,77.87,75.85,69.6,75.08,60.95,58.44,62.24, 销售净利率(%),12.89,10.93,11.98,13.16,6.47,9.56,10.82,14.35,10.27,10.81,16.45,-1.07,17.32,5.63,14.53, 净资产收益率(%),1.93,4.44,3.9,4.06,--,9.42,--,--,10.38,4.64,11.15,-0.07,23.35,8.66,18.68, 股本报酬率(%),20.11,109.5,39.69,36.99,--,--,--,59.81,--,--,--,--,--,--,--, 净资产报酬率(%),1.93,10.7,3.9,4.06,--,15.79,--,--,10.38,4.64,11.15,-0.07,23.35,8.66,18.68, 资产报酬率(%),1.25,7.04,2.58,2.38,--,8.83,--,--,5.36,2.81,7.52,-0.05,12.45,3.63,11.85, 销售毛利率(%),--,--,--,--,--,--,--,--,22.13,24.15,30.4,24.92,39.05,41.56,37.76, 三项费用比重(%),10.13,10.09,8.49,0,11.05,5.71,6.22,0,5.04,5.67,6.14,22.51,14.72,28.7,15.98, 非主营比重(%),1.9,6.59,0.08,0,0.84,-2.14,-2.34,0,0.09,-0.01,8.4,-161.9,1.73,13.18,2.93, 主营利润比重(%),174.32,223.34,218.17,662.43,318.94,205.4,157.23,636.02,184.56,188.69,154.93,-2776.87,178.47,436.34,215.3,