| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Hechun Chem | China national standards | MT | 596.9 | USD | 20251111 |
| Changzhou Hechun Chem | China national standards | MT | 592.75 | USD | 20251110 |
| Changzhou Hechun Chem | China national standards | MT | 592.38 | USD | 20251105 |
| Changzhou Hechun Chem | China national standards | MT | 592.51 | USD | 20251104 |
| Changzhou Hechun Chem | China national standards | MT | 592.66 | USD | 20251103 |
| Changzhou Hechun Chem | China national standards | MT | 585.5 | USD | 20251031 |
| Changzhou Hechun Chem | China national standards | MT | 589.86 | USD | 20251030 |
| Changzhou Hechun Chem | China national standards | MT | 584.39 | USD | 20251029 |
| Changzhou Hechun Chem | China national standards | MT | 590.04 | USD | 20251029 |
| Changzhou Hechun Chem | China national standards | MT | 609.69 | USD | 20251028 |