| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chem | China national standards | MT | 506.64 | USD | 20250925 |
| Shandong Huize Chem | China national standards | MT | 506.64 | USD | 20250924 |
| Shandong Huize Chem | China national standards | MT | 506.64 | USD | 20250923 |
| Shandong Huize Chem | China national standards | MT | 506.29 | USD | 20250922 |
| Shandong Huize Chem | China national standards | MT | 506.13 | USD | 20250919 |
| Shandong Huize Chem | China national standards | MT | 506.44 | USD | 20250918 |
| Shandong Huize Chem | China national standards | MT | 506.85 | USD | 20250916 |
| Shandong Huize Chem | China national standards | MT | 506.64 | USD | 20250915 |
| Shandong Huize Chem | China national standards | MT | 506.41 | USD | 20250902 |
| Shandong Huize Chem | China national standards | MT | 505.7 | USD | 20250826 |