报告日期,2021-03-31,2020-12-31,2020-09-30,2020-06-30,2020-03-31,2019-12-31,2019-09-30,2019-03-31,2018-12-31,2017-12-31,2016-12-31, 总资产利润率(%),1.92,6.85,7.51,4.56,--,9.32,--,2.34,8.62,11.62,9.75, 主营业务利润率(%),29.92,29.68,29.62,28.77,28.8,29.83,100,30.02,31.1,34.26,36.69, 总资产净利润率(%),1.95,8.71,8.5,4.99,--,10.18,--,2.4,10.85,13.78,9.75, 成本费用利润率(%),17.49,16.6,18.9,18.14,18.45,18.16,--,18.41,21.01,19.68,17.72, 营业利润率(%),13.59,12.07,13.58,13.38,14.04,13.83,13.58,14.16,15.58,14.45,12.26, 主营业务成本率(%),69.88,70.13,70.2,71.02,70.95,69.98,--,69.65,68.73,65.45,62.37, 销售净利率(%),12.68,12.03,13.23,12.77,12.97,12.94,12.85,13.03,14.42,13.57,11.6, 净资产收益率(%),2.66,9.48,12.45,7.41,--,13.54,--,3.33,12.03,26,20.24, 股本报酬率(%),26.51,226.69,--,--,--,--,--,--,--,--,--, 净资产报酬率(%),2.66,17.51,24.35,18.76,--,13.54,--,3.33,12.03,26,20.24, 资产报酬率(%),1.92,12.65,14.7,11.54,--,9.32,--,2.34,8.62,11.62,9.75, 销售毛利率(%),--,--,--,--,--,--,--,30.35,31.27,34.55,37.63, 三项费用比重(%),3.94,4.7,3.97,3.84,4.19,6.05,0,6.94,5.41,7.85,5.88, 非主营比重(%),-4.96,3.12,3.32,1.7,-0.95,0.06,0,0,0.18,0.21,0.04, 主营利润比重(%),231.14,238.26,210.8,211.35,207.13,215.49,736.69,212.01,199.22,236.54,299.27,