| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 766.5 | USD | 20251009 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 766.5 | USD | 20251009 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 767.01 | USD | 20250930 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 767.01 | USD | 20250930 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 766.64 | USD | 20250929 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 766.64 | USD | 20250929 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 765.97 | USD | 20250928 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 765.97 | USD | 20250928 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 765.97 | USD | 20250926 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 765.97 | USD | 20250926 |