| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.21 | USD | 20250930 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.01 | USD | 20250929 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 421.63 | USD | 20250927 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 421.63 | USD | 20250926 |
| Qingdao Ruishuang Chemical Co., Ltd. | China national standards | MT | 422.2 | USD | 20250925 |