| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1212.05 | USD | 20251022 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1212.46 | USD | 20251021 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 986.29 | USD | 20251020 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.73 | USD | 20251020 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1212.14 | USD | 20251017 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.81 | USD | 20251016 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1000.45 | USD | 20251016 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.35 | USD | 20251015 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1000.07 | USD | 20251015 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1210.91 | USD | 20251014 |