| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Chengxin Chem | China national standards | MT | 648.98 | USD | 20251031 |
| Qingdao Chengxin Chem | China national standards | MT | 648.98 | USD | 20251031 |
| Qingdao Chengxin Chem | China national standards | MT | 649.13 | USD | 20251030 |
| Qingdao Chengxin Chem | China national standards | MT | 649.13 | USD | 20251030 |
| Qingdao Chengxin Chem | China national standards | MT | 789.09 | USD | 20251016 |
| Qingdao Chengxin Chem | China national standards | MT | 789.09 | USD | 20251016 |
| Qingdao Chengxin Chem | China national standards | MT | 788.79 | USD | 20251015 |
| Qingdao Chengxin Chem | China national standards | MT | 788.79 | USD | 20251015 |
| Qingdao Chengxin Chem | China national standards | MT | 788.12 | USD | 20250930 |
| Qingdao Chengxin Chem | China national standards | MT | 788.12 | USD | 20250930 |