| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 779.63 | USD | 20250826 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 779.92 | USD | 20250825 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 680.02 | USD | 20250822 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 680.35 | USD | 20250821 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 679.42 | USD | 20250820 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 679.66 | USD | 20250819 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 680.01 | USD | 20250818 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 679.1 | USD | 20250812 |