| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.79 | USD | 20251106 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.29 | USD | 20251105 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.77 | USD | 20251103 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251102 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251101 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 988.1 | USD | 20251029 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.92 | USD | 20251028 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 986.92 | USD | 20251025 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 987.06 | USD | 20251023 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 986.55 | USD | 20251022 |