| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.48 | USD | 20251031 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.48 | USD | 20251031 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.48 | USD | 20251031 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.98 | USD | 20251029 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.98 | USD | 20251029 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.81 | USD | 20251028 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 973.46 | USD | 20251027 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 972.82 | USD | 20251024 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 972.82 | USD | 20251024 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 972.95 | USD | 20251023 |