| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1075.86 | USD | 20250922 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1075.86 | USD | 20250922 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1075.53 | USD | 20250919 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1075.53 | USD | 20250919 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1077.02 | USD | 20250908 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1077.02 | USD | 20250908 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1076.49 | USD | 20250905 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1076.49 | USD | 20250905 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1076.68 | USD | 20250904 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1076.51 | USD | 20250828 |