信用评级

信用评级
区分
2018 AAA AAA AAA A+ A1
2017 AAA AAA AAA A+ A1
2016 AAA AAA AAA - -
2015 AAA AAA AAA - -
2014 AAA AAA AAA - -
2013 AAA AAA AAA - -
2012 AAA AAA AAA - -
2011 AAA AAA AAA - -