| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.78 | USD | 20251014 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.98 | USD | 20251013 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.4 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.4 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1012.63 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1011.92 | USD | 20250928 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1011.92 | USD | 20250926 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.27 | USD | 20250925 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1013.27 | USD | 20250924 |