| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Chengxin Chem | China national standards | MT | 536.24 | USD | 20251030 |
| Qingdao Chengxin Chem | China national standards | MT | 536.24 | USD | 20251030 |
| Qingdao Chengxin Chem | China national standards | MT | 535.45 | USD | 20251016 |
| Qingdao Chengxin Chem | China national standards | MT | 535.45 | USD | 20251016 |
| Qingdao Chengxin Chem | China national standards | MT | 535.25 | USD | 20251015 |
| Qingdao Chengxin Chem | China national standards | MT | 535.25 | USD | 20251015 |
| Qingdao Chengxin Chem | China national standards | MT | 534.8 | USD | 20250930 |
| Qingdao Chengxin Chem | China national standards | MT | 534.8 | USD | 20250930 |
| Qingdao Chengxin Chem | China national standards | MT | 534.54 | USD | 20250929 |
| Qingdao Chengxin Chem | China national standards | MT | 534.54 | USD | 20250929 |