| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 777.57 | USD | 20251204 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 777.34 | USD | 20251203 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 777.34 | USD | 20251203 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.9 | USD | 20251202 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.9 | USD | 20251202 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 777.29 | USD | 20251201 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 777.29 | USD | 20251201 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.96 | USD | 20251128 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 776.96 | USD | 20251128 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 777.07 | USD | 20251127 |