| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 799.19 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.64 | USD | 20250816 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.64 | USD | 20250816 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.64 | USD | 20250815 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.64 | USD | 20250815 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 799.02 | USD | 20250814 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 799.02 | USD | 20250814 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.88 | USD | 20250813 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.88 | USD | 20250813 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 798.12 | USD | 20250812 |