| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 352.78 | USD | 20251113 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 352.94 | USD | 20251112 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 451.77 | USD | 20251112 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 451.56 | USD | 20251111 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 352.78 | USD | 20251111 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 451.62 | USD | 20251110 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 352.83 | USD | 20251110 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 352.93 | USD | 20251108 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 451.75 | USD | 20251108 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 352.93 | USD | 20251107 |