| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.7 | USD | 20251020 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.84 | USD | 20251018 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.84 | USD | 20251017 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.73 | USD | 20251016 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.41 | USD | 20251014 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.49 | USD | 20251013 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.25 | USD | 20251012 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.25 | USD | 20251010 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.25 | USD | 20251010 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 421.93 | USD | 20251009 |