| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1112.21 | USD | 20250831 |
| Qingdao Shengze Chem | China national standards | MT | 1112.21 | USD | 20250830 |
| Shandong Fusheng | China national standards | MT | 964.38 | USD | 20250829 |
| Shandong Fusheng | China national standards | MT | 964.38 | USD | 20250829 |
| Qingdao Shengze Chem | China national standards | MT | 1112.21 | USD | 20250829 |
| Shandong Fusheng | China national standards | MT | 963.93 | USD | 20250828 |
| Shandong Fusheng | China national standards | MT | 963.93 | USD | 20250828 |
| Qingdao Shengze Chem | China national standards | MT | 1111.69 | USD | 20250828 |
| Qingdao Shengze Chem | China national standards | MT | 1110.99 | USD | 20250827 |
| Shandong Fusheng | China national standards | MT | 963.32 | USD | 20250827 |