| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251111 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.53 | USD | 20251110 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.58 | USD | 20251107 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251106 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.41 | USD | 20251105 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.45 | USD | 20251104 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.5 | USD | 20251103 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.46 | USD | 20251031 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.51 | USD | 20251030 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.56 | USD | 20251029 |