| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chem | China national standards | MT | 842.75 | USD | 20251216 |
| Shandong Huize Chem | China national standards | MT | 840.95 | USD | 20251210 |
| Shandong Huize Chem | China national standards | MT | 840.82 | USD | 20251208 |
| Shandong Huize Chem | China national standards | MT | 840.47 | USD | 20251202 |
| Shandong Huize Chem | China national standards | MT | 840.53 | USD | 20251128 |
| Shandong Huize Chem | China national standards | MT | 839.62 | USD | 20251113 |
| Shandong Huize Chem | China national standards | MT | 839.61 | USD | 20251111 |
| Shandong Huize Chem | China national standards | MT | 839.0 | USD | 20251023 |
| Shandong Huize Chem | China national standards | MT | 838.09 | USD | 20251015 |
| Shandong Huize Chem | China national standards | MT | 836.83 | USD | 20251009 |