| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Hechun Chem | China national standards | MT | 580.03 | USD | 20251211 |
| Changzhou Hechun Chem | China national standards | MT | 579.48 | USD | 20251210 |
| Changzhou Hechun Chem | China national standards | MT | 576.49 | USD | 20251209 |
| Changzhou Hechun Chem | China national standards | MT | 572.32 | USD | 20251208 |
| Changzhou Hechun Chem | China national standards | MT | 572.45 | USD | 20251205 |
| Changzhou Hechun Chem | China national standards | MT | 579.64 | USD | 20251204 |
| Changzhou Hechun Chem | China national standards | MT | 582.3 | USD | 20251203 |
| Changzhou Hechun Chem | China national standards | MT | 587.62 | USD | 20251202 |
| Changzhou Hechun Chem | China national standards | MT | 589.07 | USD | 20251128 |
| Changzhou Hechun Chem | China national standards | MT | 593.4 | USD | 20251127 |