| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 841.67 | USD | 20250821 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.52 | USD | 20250820 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.82 | USD | 20250819 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 841.26 | USD | 20250818 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.12 | USD | 20250812 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.55 | USD | 20250808 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.98 | USD | 20250807 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.23 | USD | 20250806 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.39 | USD | 20250804 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 839.21 | USD | 20250801 |