| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.15 | USD | 20251013 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.45 | USD | 20251011 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.45 | USD | 20251010 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1209.53 | USD | 20251009 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1012.63 | USD | 20251009 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20251006 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20251005 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20251004 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20251003 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20251002 |