| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chem | China national standards | MT | 565.38 | USD | 20251205 |
| Wanglong | China national standards | MT | 572.45 | USD | 20251205 |
| Zaozhuang Yitai | China national standards | MT | 537.11 | USD | 20251205 |
| Zaozhuang Yitai | China national standards | MT | 537.11 | USD | 20251205 |
| Wanglong | China national standards | MT | 614.99 | USD | 20251204 |
| Changzhou Yihan Chem | China national standards | MT | 565.34 | USD | 20251203 |
| Wanglong | China national standards | MT | 614.46 | USD | 20251202 |
| Changzhou Yihan Chem | China national standards | MT | 565.3 | USD | 20251201 |
| Wanglong | China national standards | MT | 572.37 | USD | 20251201 |
| Zaozhuang Yitai | China national standards | MT | 537.03 | USD | 20251201 |