| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chem | China national standards | MT | 1107.65 | USD | 20250818 |
| Shandong Fusheng | China national standards | MT | 960.43 | USD | 20250818 |
| Shandong Fusheng | China national standards | MT | 960.43 | USD | 20250818 |
| Qingdao Shengze Chem | China national standards | MT | 1106.89 | USD | 20250817 |
| Qingdao Shengze Chem | China national standards | MT | 1106.89 | USD | 20250816 |
| Qingdao Shengze Chem | China national standards | MT | 1106.89 | USD | 20250815 |
| Shandong Fusheng | China national standards | MT | 959.77 | USD | 20250815 |
| Shandong Fusheng | China national standards | MT | 959.77 | USD | 20250815 |
| Qingdao Shengze Chem | China national standards | MT | 1107.42 | USD | 20250814 |
| Shandong Fusheng | China national standards | MT | 960.23 | USD | 20250814 |