| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Chengxin Chem | China national standards | MT | 534.07 | USD | 20250928 |
| Qingdao Chengxin Chem | China national standards | MT | 534.07 | USD | 20250928 |
| Qingdao Chengxin Chem | China national standards | MT | 534.07 | USD | 20250926 |
| Qingdao Chengxin Chem | China national standards | MT | 534.07 | USD | 20250926 |
| Qingdao Chengxin Chem | China national standards | MT | 534.78 | USD | 20250925 |
| Qingdao Chengxin Chem | China national standards | MT | 534.78 | USD | 20250925 |
| Qingdao Chengxin Chem | China national standards | MT | 534.78 | USD | 20250924 |
| Qingdao Chengxin Chem | China national standards | MT | 534.78 | USD | 20250924 |
| Qingdao Chengxin Chem | China national standards | MT | 534.41 | USD | 20250922 |
| Qingdao Chengxin Chem | China national standards | MT | 534.41 | USD | 20250922 |