| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 976.15 | USD | 20251211 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 961.09 | USD | 20251210 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 946.69 | USD | 20251209 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 946.69 | USD | 20251209 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 946.69 | USD | 20251209 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 946.81 | USD | 20251208 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 961.36 | USD | 20251204 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 961.01 | USD | 20251201 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 961.01 | USD | 20251201 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 946.47 | USD | 20251128 |