| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20251001 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.33 | USD | 20250930 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1013.3 | USD | 20250930 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1209.75 | USD | 20250929 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1012.81 | USD | 20250929 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1208.68 | USD | 20250926 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.3 | USD | 20250925 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1013.27 | USD | 20250925 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.3 | USD | 20250924 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.3 | USD | 20250923 |