| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 563.15 | USD | 20250908 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.87 | USD | 20250906 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.87 | USD | 20250905 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.97 | USD | 20250904 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.52 | USD | 20250903 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.67 | USD | 20250902 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.81 | USD | 20250901 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 563.14 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 563.14 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 562.88 | USD | 20250828 |