| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.8 | USD | 20251020 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.8 | USD | 20251020 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.89 | USD | 20251017 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.89 | USD | 20251017 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.82 | USD | 20251016 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.82 | USD | 20251016 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.71 | USD | 20251015 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.71 | USD | 20251015 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.61 | USD | 20251014 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 281.61 | USD | 20251014 |