| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guohong Chem | China national standards | MT | 438.85 | USD | 20260428 |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260212 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260210 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260206 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260127 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260123 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260108 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20260107 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20251231 | |
| Yankuang Guohong Chem | China national standards | MT | USD | 20241219 |