| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1241.37 | USD | 20250620 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1240.78 | USD | 20250619 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1240.23 | USD | 20250618 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1240.23 | USD | 20250618 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1240.49 | USD | 20250617 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1239.74 | USD | 20250616 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250614 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250613 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250612 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250611 |