| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 936.77 | USD | 20250721 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.09 | USD | 20250719 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.09 | USD | 20250718 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.57 | USD | 20250717 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 936.72 | USD | 20250716 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.09 | USD | 20250715 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.18 | USD | 20250714 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.18 | USD | 20250714 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.39 | USD | 20250712 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 937.39 | USD | 20250711 |