| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.73 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.66 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.55 | USD | 20250826 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.58 | USD | 20250825 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.35 | USD | 20250823 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.35 | USD | 20250822 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.4 | USD | 20250821 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.26 | USD | 20250820 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.35 | USD | 20250818 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 102.28 | USD | 20250816 |