| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1073.13 | USD | 20250821 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1071.67 | USD | 20250820 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1071.67 | USD | 20250820 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1072.04 | USD | 20250819 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1072.04 | USD | 20250819 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1072.6 | USD | 20250818 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1072.6 | USD | 20250818 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1064.16 | USD | 20250812 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1064.16 | USD | 20250812 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 1064.69 | USD | 20250808 |