| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1142.99 | USD | 20251103 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.04 | USD | 20251103 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1142.78 | USD | 20251101 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1149.83 | USD | 20251101 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1149.83 | USD | 20251031 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1142.78 | USD | 20251031 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.09 | USD | 20251030 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1143.37 | USD | 20251029 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.43 | USD | 20251029 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.22 | USD | 20251028 |