| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 774.04 | USD | 20250915 |
| Shandong Yeyang Chem | China national standards | MT | 773.96 | USD | 20250828 |
| Shandong Yeyang Chem | China national standards | MT | 772.9 | USD | 20250825 |
| Shandong Yeyang Chem | China national standards | MT | 771.16 | USD | 20250823 |
| Shandong Yeyang Chem | China national standards | MT | 771.16 | USD | 20250822 |
| Shandong Yeyang Chem | China national standards | MT | 771.53 | USD | 20250821 |
| Shandong Yeyang Chem | China national standards | MT | 770.48 | USD | 20250820 |
| Shandong Yeyang Chem | China national standards | MT | 770.75 | USD | 20250819 |
| Shandong Yeyang Chem | China national standards | MT | 771.15 | USD | 20250818 |