| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.99 | USD | 20251116 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.99 | USD | 20251115 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.99 | USD | 20251114 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.85 | USD | 20251108 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.46 | USD | 20251106 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 944.98 | USD | 20251105 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.43 | USD | 20251103 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.26 | USD | 20251102 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.26 | USD | 20251101 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.75 | USD | 20251029 |