| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1299.64 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1334.95 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1299.64 | USD | 20251128 |
| Shandong Langchem | China national standards | MT | 1334.95 | USD | 20251128 |
| Shandong Langchem | China national standards | MT | 1299.82 | USD | 20251127 |
| Shandong Langchem | China national standards | MT | 1335.14 | USD | 20251127 |
| Shandong Langchem | China national standards | MT | 1299.51 | USD | 20251126 |
| Shandong Langchem | China national standards | MT | 1334.82 | USD | 20251126 |
| Shandong Langchem | China national standards | MT | 1334.26 | USD | 20251125 |
| Shandong Langchem | China national standards | MT | 1298.96 | USD | 20251125 |