| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.59 | USD | 20250516 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.08 | USD | 20250515 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.23 | USD | 20250514 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1458.52 | USD | 20250513 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1458.52 | USD | 20250513 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1457.0 | USD | 20250512 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1456.41 | USD | 20250510 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1456.41 | USD | 20250509 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1456.86 | USD | 20250508 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1458.23 | USD | 20250507 |