| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.27 | USD | 20250924 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.27 | USD | 20250923 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.57 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250920 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250919 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.87 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.7 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.29 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.81 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.81 | USD | 20250913 |