| Date | Rating Company | Securities for Evaluations | Credit Rating | Type |
|---|---|---|---|---|
| 2020.09 | NICE Ratings (AAA~D) | Corporate Bond | AA | Main Rating |
| 2020.09 | Korea Investors Service (AAA~D) | Corporate Bond | AA | Main Rating |
| 2020.09 | Korea Investors Service (A1~D) | Commercial Paper | A1 | Regular Rating |
| 2020.09 | Korea Investors Service (A1~D) | Electronic Short-term Bond | A1 | Regular Rating |
| 2020.06 | NICE Ratings (AAA~D) | Corporate Bond | AA | Regular Rating |
| 2020.06 | NICE Ratings (A1~D) | Commercial Paper | A1 | Main Rating |
| 2020.06 | NICE Ratings (A1~D) | Electronic Short-term Bond | A1 | Main Rating |
| 2020.06 | Korea Investors Service (AAA~D) | Corporate Bond | AA | Regular Rating |
| 2020.06 | Korea Investors Service (A1~D) | Commercial Paper | A1 | Main Rating |
| 2020.06 | Korea Investors Service (A1~D) | Electronic Short-term Bond | A1 | Main Rating |
| 2020.04 | Korea Investors Service (AAA~D) | Corporate Bond | AA | Main Rating |
| 2020.04 | Korea Ratings (AAA~D) | Corporate Bond | AA | Main Rating |
| 2019.10 | Korea Investors Service (AAA~D) | Corporate Bond | AA | Frequent Rating |
| 2019.08 | NICE Ratings (AAA~D) | Corporate Bond | AA | Main Rating |
| 2019.08 | NICE Ratings (AAA~D) | Commercial Paper | A1 | Regular Rating |
| 2019.08 | NICE Ratings (AAA~D) | Electronic Short-term Bond | A1 | Regular Rating |
| 2019.08 | Korea Investors Service (AAA~D) | Corporate Bond | AA | Main Rating |
| 2019.08 | Korea Investors Service (AAA~D) | Commercial Paper | A1 | Regular Rating |
| 2019.08 | Korea Investors Service (AAA~D) | Electronic Short-term Bond | A1 | Regular Rating |
| 2019.08 | Korea Ratings (AAA~D) | Corporate Bond | AA | Main Rating |
| 2019.06 | NICE Ratings (AAA~D) | Electronic Short-term Bond | A1 | Main Rating |
| 2019.06 | NICE Ratings (AAA~D) | Commercial Paper | A1 | Main Rating |
| 2019.06 | Korea Investors Service (AAA~D) | Commercial Paper | A1 | Main Rating |
| 2019.06 | Korea Investors Service (AAA~D) | Electronic Short-term Bond | A1 | Main Rating |
| 2019.05 | NICE Ratings (AAA~D) | Corporate Bond | AA | Regular Rating |
| 2019.05 | Korea Investors Service (AAA~D) | Corporate Bond | AA | Regular Rating |
| 2019.05 | Korea Ratings (AAA~D) | Corporate Bond | AA | Regular Rating |
| 2019.01 | NICE Ratings (AAA~D) | Corporate Bond | AA+ | Main Rating |
| 2019.01 | Korea Investors Service (AAA~D) | Corporate Bond | AA+ | Main Rating |
| 2019.01 | Korea Investors Service (AAA~D) | Corporate Bond | AA+ | Main Rating |
