| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.35 | USD | 20251011 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 327.95 | USD | 20251011 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 327.95 | USD | 20251010 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.35 | USD | 20251010 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.1 | USD | 20251009 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 327.7 | USD | 20251009 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 341.99 | USD | 20251008 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.32 | USD | 20251008 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.32 | USD | 20251007 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.32 | USD | 20251005 |