| Rating Code | 
        Rating Agency | 
        Effective Date | 
        End Date | 
        Rating Action | 
        Rating Outlook | 
        Rating Watch | 
    
    
        | D | 
        TRIS RATING COMPANY LIMITED | 
        27 May 2020 | 
         | 
        Downgrade | 
        Downgrade | 
         |  
    
    
        | C | 
        TRIS RATING COMPANY LIMITED | 
        19 May 2020 | 
        27 May 2020 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | BBB | 
        TRIS RATING COMPANY LIMITED | 
        16 May 2020 | 
        19 May 2020 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        2 Apr 2020 | 
        16 May 2020 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        29 Oct 2019 | 
         | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        11 Apr 2019 | 
        29 Oct 2019 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        14 Jan 2019 | 
         | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        26 Jul 2018 | 
        14 Jan 2019 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        16 Feb 2018 | 
        26 Jul 2018 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        10 Jan 2018 | 
        16 Feb 2018 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        13 Jun 2017 | 
        10 Jan 2018 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        16 Dec 2016 | 
        13 Jun 2017 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A | 
        TRIS RATING COMPANY LIMITED | 
        12 Jan 2016 | 
        16 Dec 2016 | 
        Unclassified | 
        Unclassified | 
         |  
    
    
        | A+ | 
        TRIS RATING COMPANY LIMITED | 
        17 Sep 2015 | 
        12 Jan 2016 | 
        Unclassified | 
        Unclassified | 
         |