| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.66 | USD | 20250807 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 490.13 | USD | 20250806 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.15 | USD | 20250806 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.49 | USD | 20250805 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.26 | USD | 20250804 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.47 | USD | 20250802 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.47 | USD | 20250801 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.49 | USD | 20250731 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.9 | USD | 20250730 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.35 | USD | 20250729 |