| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 839.23 | USD | 20250731 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 839.85 | USD | 20250730 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 839.03 | USD | 20250729 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 839.55 | USD | 20250728 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 840.11 | USD | 20250725 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 854.17 | USD | 20250723 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 853.62 | USD | 20250722 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 853.17 | USD | 20250718 |