| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1246.76 | USD | 20250724 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1246.25 | USD | 20250723 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1245.45 | USD | 20250722 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.37 | USD | 20250721 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.79 | USD | 20250719 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.79 | USD | 20250718 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1245.43 | USD | 20250717 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.3 | USD | 20250716 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.79 | USD | 20250715 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.91 | USD | 20250714 |