| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 943.28 | USD | 20250908 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.81 | USD | 20250906 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.81 | USD | 20250905 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.97 | USD | 20250904 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.48 | USD | 20250902 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.71 | USD | 20250901 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 943.26 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 943.26 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.83 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 942.23 | USD | 20250827 |