| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong LuoHeng Chem | China national standards | MT | 336.14 | USD | 20251009 |
| Shandong LuoHeng Chem | China national standards | MT | 336.2 | USD | 20250929 |
| Shandong LuoHeng Chem | China national standards | MT | 336.35 | USD | 20250925 |
| Shandong LuoHeng Chem | China national standards | MT | 336.35 | USD | 20250924 |
| Shandong LuoHeng Chem | China national standards | MT | 336.35 | USD | 20250923 |
| Shandong LuoHeng Chem | China national standards | MT | 336.12 | USD | 20250922 |