| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.75 | USD | 20251117 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.7 | USD | 20251114 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.45 | USD | 20251113 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.65 | USD | 20251112 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.45 | USD | 20251111 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.51 | USD | 20251110 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.63 | USD | 20251107 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.45 | USD | 20251106 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.23 | USD | 20251105 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 437.33 | USD | 20251104 |