| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.34 | USD | 20250724 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 560.11 | USD | 20250723 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.75 | USD | 20250722 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 566.26 | USD | 20250721 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.27 | USD | 20250721 |
| Shandong Chengshuo Chemical Co., Ltd. | China national standards | MT | 587.23 | USD | 20250721 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.46 | USD | 20250719 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.46 | USD | 20250718 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.75 | USD | 20250717 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 559.24 | USD | 20250716 |