| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 763.48 | USD | 20250820 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 763.74 | USD | 20250819 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 764.14 | USD | 20250818 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 763.11 | USD | 20250812 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 763.5 | USD | 20250808 |