| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Chengxin Chem | China national standards | MT | 804.18 | USD | 20251031 |
| Qingdao Chengxin Chem | China national standards | MT | 804.36 | USD | 20251030 |
| Qingdao Chengxin Chem | China national standards | MT | 803.18 | USD | 20251016 |
| Qingdao Chengxin Chem | China national standards | MT | 802.87 | USD | 20251015 |
| Qingdao Chengxin Chem | China national standards | MT | 802.2 | USD | 20250930 |
| Qingdao Chengxin Chem | China national standards | MT | 801.81 | USD | 20250929 |
| Qingdao Chengxin Chem | China national standards | MT | 801.1 | USD | 20250928 |
| Qingdao Chengxin Chem | China national standards | MT | 801.1 | USD | 20250926 |
| Qingdao Chengxin Chem | China national standards | MT | 802.17 | USD | 20250925 |
| Qingdao Chengxin Chem | China national standards | MT | 802.17 | USD | 20250924 |