| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 316.89 | USD | 20251211 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.63 | USD | 20251211 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 316.59 | USD | 20251210 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.31 | USD | 20251210 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.22 | USD | 20251209 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 316.5 | USD | 20251209 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.26 | USD | 20251208 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 316.55 | USD | 20251208 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 316.61 | USD | 20251207 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.33 | USD | 20251207 |