| Vendor | Spec | Unit | Price | Currency | Date |
| Liaocheng Runheng Chemical Trading Co., Ltd. | China national standards | MT | 1044.0 | USD | 20251027 |
| Liaocheng Runheng Chemical Trading Co., Ltd. | China national standards | MT | 1043.46 | USD | 20251023 |
| Liaocheng Runheng Chemical Trading Co., Ltd. | China national standards | MT | 1041.95 | USD | 20251014 |
| Liaocheng Runheng Chemical Trading Co., Ltd. | China national standards | MT | 1041.55 | USD | 20251010 |