| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.08 | USD | 20250721 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.57 | USD | 20250719 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.57 | USD | 20250718 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1469.33 | USD | 20250717 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.0 | USD | 20250716 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1748.3 | USD | 20250715 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.57 | USD | 20250715 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1468.72 | USD | 20250714 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1469.05 | USD | 20250712 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1469.05 | USD | 20250711 |