| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.11 | USD | 20250731 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.18 | USD | 20250730 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.08 | USD | 20250729 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.15 | USD | 20250728 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.21 | USD | 20250726 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.21 | USD | 20250725 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.26 | USD | 20250724 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.22 | USD | 20250723 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.16 | USD | 20250722 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.07 | USD | 20250721 |