| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.12 | USD | 20251106 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 775.73 | USD | 20251105 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 775.73 | USD | 20251105 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 775.9 | USD | 20251104 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.1 | USD | 20251103 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.1 | USD | 20251103 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 775.96 | USD | 20251031 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 775.96 | USD | 20251031 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.13 | USD | 20251030 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.13 | USD | 20251030 |