| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1466.77 | USD | 20250630 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1465.93 | USD | 20250628 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1465.93 | USD | 20250627 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1466.07 | USD | 20250626 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1465.09 | USD | 20250625 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1465.33 | USD | 20250624 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1464.23 | USD | 20250623 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1464.54 | USD | 20250621 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1464.54 | USD | 20250620 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1463.84 | USD | 20250619 |