| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1470.69 | USD | 20250804 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.61 | USD | 20250802 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.61 | USD | 20250801 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.65 | USD | 20250731 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1469.74 | USD | 20250730 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.31 | USD | 20250729 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1469.21 | USD | 20250728 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1470.2 | USD | 20250726 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1470.2 | USD | 20250725 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1470.9 | USD | 20250724 |