| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.25 | USD | 20251128 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.41 | USD | 20251127 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.47 | USD | 20251127 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.13 | USD | 20251126 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.19 | USD | 20251126 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.71 | USD | 20251125 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.37 | USD | 20251124 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1149.91 | USD | 20251121 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1149.43 | USD | 20251120 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1142.91 | USD | 20251119 |