| Vendor | Spec | Unit | Price | Currency | Date |
| Shaanxi Lufeng Chem | China national standards | MT | 802.17 | USD | 20250925 |
| Shaanxi Lufeng Chem | China national standards | MT | 804.99 | USD | 20250924 |
| Shaanxi Lufeng Chem | China national standards | MT | 802.17 | USD | 20250923 |
| Shaanxi Lufeng Chem | China national standards | MT | 800.92 | USD | 20250922 |
| Shaanxi Lufeng Chem | China national standards | MT | 798.56 | USD | 20250919 |