| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chem | N220 | MT | 1012.63 | USD | 20251009 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20251006 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20251005 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20251004 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20251003 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20251002 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20251001 |
| Shanxi Hengxin Chem | N220 | MT | 1210.33 | USD | 20250930 |
| Shanxi Hengxin Chem | N220 | MT | 1013.3 | USD | 20250930 |
| Shanxi Hengxin Chem | N220 | MT | 1209.75 | USD | 20250929 |