| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.82 | USD | 20251014 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.95 | USD | 20251013 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.56 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.56 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.05 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.5 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 667.58 | USD | 20250928 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 667.58 | USD | 20250926 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.48 | USD | 20250925 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 668.48 | USD | 20250924 |