| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1102.94 | USD | 20250627 |
| Qingdao Shengze Chem | China national standards | MT | 1103.04 | USD | 20250626 |
| Qingdao Shengze Chem | China national standards | MT | 1102.31 | USD | 20250625 |
| Qingdao Shengze Chem | China national standards | MT | 1102.49 | USD | 20250624 |
| Qingdao Shengze Chem | China national standards | MT | 1101.66 | USD | 20250623 |
| Qingdao Shengze Chem | China national standards | MT | 1101.89 | USD | 20250622 |
| Qingdao Shengze Chem | China national standards | MT | 1101.89 | USD | 20250620 |
| Shandong Fusheng | China national standards | MT | 954.98 | USD | 20250619 |
| Shandong Fusheng | China national standards | MT | 954.98 | USD | 20250619 |
| Qingdao Shengze Chem | China national standards | MT | 1101.37 | USD | 20250619 |