| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.71 | USD | 20251129 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.71 | USD | 20251128 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.73 | USD | 20251127 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.69 | USD | 20251126 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.69 | USD | 20251126 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.61 | USD | 20251125 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.55 | USD | 20251124 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.48 | USD | 20251122 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.48 | USD | 20251121 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.48 | USD | 20251121 |