| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yaowang Chem | China national standards | MT | 302.61 | USD | 20251010 |
| Shandong Yaowang Chem | China national standards | MT | 302.38 | USD | 20251009 |
| Shandong Yaowang Chem | China national standards | MT | 358.88 | USD | 20250930 |
| Shandong Yaowang Chem | China national standards | MT | 358.39 | USD | 20250928 |
| Shandong Yaowang Chem | China national standards | MT | 358.39 | USD | 20250927 |
| Shandong Yaowang Chem | China national standards | MT | 358.87 | USD | 20250925 |
| Shandong Yaowang Chem | China national standards | MT | 358.87 | USD | 20250924 |
| Shandong Yaowang Chem | China national standards | MT | 302.57 | USD | 20250923 |
| Shandong Yaowang Chem | China national standards | MT | 302.57 | USD | 20250923 |