| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.32 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.32 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 435.99 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.28 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 435.69 | USD | 20250928 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 435.69 | USD | 20250926 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.27 | USD | 20250925 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.27 | USD | 20250924 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 436.27 | USD | 20250923 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 435.97 | USD | 20250922 |