| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.06 | USD | 20251013 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.84 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.84 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.55 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.8 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.28 | USD | 20250928 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.28 | USD | 20250926 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.79 | USD | 20250925 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.79 | USD | 20250924 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 382.79 | USD | 20250923 |