| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.65 | USD | 20251008 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.65 | USD | 20250930 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.41 | USD | 20250929 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 505.96 | USD | 20250928 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 505.96 | USD | 20250926 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 505.96 | USD | 20250926 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.64 | USD | 20250925 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.64 | USD | 20250924 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.64 | USD | 20250923 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 506.29 | USD | 20250922 |