| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 745.81 | USD | 20250905 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 745.54 | USD | 20250902 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 745.72 | USD | 20250901 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 746.16 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 746.16 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 745.82 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 745.35 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 744.51 | USD | 20250826 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 744.79 | USD | 20250825 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 743.12 | USD | 20250823 |