| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1104.8 | USD | 20250707 |
| Qingdao Shengze Chem | China national standards | MT | 1104.35 | USD | 20250706 |
| Qingdao Shengze Chem | China national standards | MT | 1104.35 | USD | 20250705 |
| Qingdao Shengze Chem | China national standards | MT | 1104.35 | USD | 20250704 |
| Shandong Fusheng | China national standards | MT | 957.57 | USD | 20250704 |
| Shandong Fusheng | China national standards | MT | 957.57 | USD | 20250704 |
| Qingdao Shengze Chem | China national standards | MT | 1104.54 | USD | 20250703 |
| Shandong Fusheng | China national standards | MT | 957.73 | USD | 20250703 |
| Shandong Fusheng | China national standards | MT | 957.73 | USD | 20250703 |
| Shandong Fusheng | China national standards | MT | 957.43 | USD | 20250702 |