| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 330.39 | USD | 20251116 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.98 | USD | 20251116 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 330.39 | USD | 20251115 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.98 | USD | 20251115 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.98 | USD | 20251114 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 330.39 | USD | 20251114 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 330.21 | USD | 20251113 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.79 | USD | 20251113 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 330.35 | USD | 20251112 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.94 | USD | 20251112 |