| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1475.53 | USD | 20250825 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1472.22 | USD | 20250823 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1472.22 | USD | 20250822 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1472.92 | USD | 20250821 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1470.92 | USD | 20250820 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1471.43 | USD | 20250819 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1472.2 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1471.19 | USD | 20250816 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1471.19 | USD | 20250815 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1471.89 | USD | 20250814 |