| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chem | N220 | MT | 1012.81 | USD | 20250929 |
| Shanxi Hengxin Chem | N220 | MT | 1208.68 | USD | 20250926 |
| Shanxi Hengxin Chem | N220 | MT | 1013.27 | USD | 20250925 |
| Shanxi Hengxin Chem | N220 | MT | 1210.3 | USD | 20250925 |
| Shanxi Hengxin Chem | N220 | MT | 1210.3 | USD | 20250924 |
| Shanxi Hengxin Chem | N220 | MT | 1210.3 | USD | 20250923 |
| Shanxi Hengxin Chem | N220 | MT | 1209.46 | USD | 20250922 |
| Shanxi Hengxin Chem | N220 | MT | 1012.57 | USD | 20250922 |
| Shanxi Hengxin Chem | N220 | MT | 1209.09 | USD | 20250920 |
| Shanxi Hengxin Chem | N220 | MT | 1209.82 | USD | 20250918 |