| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1760.04 | USD | 20251014 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1760.39 | USD | 20251013 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1759.37 | USD | 20251011 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1759.37 | USD | 20251010 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1758.04 | USD | 20251009 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1759.2 | USD | 20250930 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1756.8 | USD | 20250926 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1759.15 | USD | 20250925 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1759.15 | USD | 20250924 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1759.15 | USD | 20250923 |