| Vendor | Spec | Unit | Price | Currency | Date |
| Shijiazhuang Baipo Chem | China national standards | MT | 348.02 | USD | 20251211 |
| Shijiazhuang Baipo Chem | China national standards | MT | 344.86 | USD | 20251210 |
| Shijiazhuang Baipo Chem | China national standards | MT | 339.11 | USD | 20251209 |
| Shijiazhuang Baipo Chem | China national standards | MT | 332.09 | USD | 20251208 |
| Shijiazhuang Baipo Chem | China national standards | MT | 327.92 | USD | 20251205 |
| Shijiazhuang Baipo Chem | China national standards | MT | 330.82 | USD | 20251204 |
| Shijiazhuang Baipo Chem | China national standards | MT | 340.62 | USD | 20251203 |
| Shijiazhuang Baipo Chem | China national standards | MT | 344.66 | USD | 20251202 |
| Shijiazhuang Baipo Chem | China national standards | MT | 349.07 | USD | 20251201 |
| Shijiazhuang Baipo Chem | China national standards | MT | 348.92 | USD | 20251128 |