| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1014.74 | USD | 20251022 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1014.47 | USD | 20251020 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1014.81 | USD | 20251017 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1014.54 | USD | 20251016 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.78 | USD | 20251014 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.98 | USD | 20251013 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1011.92 | USD | 20250926 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1013.27 | USD | 20250925 |