| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.51 | USD | 20250908 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.03 | USD | 20250905 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.19 | USD | 20250904 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 984.92 | USD | 20250901 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.5 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.5 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.04 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 984.42 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 983.31 | USD | 20250826 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 983.68 | USD | 20250825 |