| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 770.5 | USD | 20251204 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 770.5 | USD | 20251204 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 770.27 | USD | 20251203 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 770.27 | USD | 20251203 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 769.84 | USD | 20251202 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 769.84 | USD | 20251202 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 770.22 | USD | 20251201 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 770.22 | USD | 20251201 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 769.89 | USD | 20251128 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 769.89 | USD | 20251128 |