| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1252.67 | USD | 20251010 |
| Shandong Langchem | China national standards | MT | 1210.45 | USD | 20251010 |
| Shandong Langchem | China national standards | MT | 1209.53 | USD | 20251009 |
| Shandong Langchem | China national standards | MT | 1258.76 | USD | 20251009 |
| Shandong Langchem | China national standards | MT | 1251.72 | USD | 20251009 |
| Shandong Langchem | China national standards | MT | 1392.37 | USD | 20251009 |
| Shandong Langchem | China national standards | MT | 1393.29 | USD | 20250930 |
| Shandong Langchem | China national standards | MT | 1252.55 | USD | 20250930 |
| Shandong Langchem | China national standards | MT | 1259.59 | USD | 20250930 |
| Shandong Langchem | China national standards | MT | 1210.33 | USD | 20250930 |