| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.22 | USD | 20251130 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.47 | USD | 20251130 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.47 | USD | 20251129 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.22 | USD | 20251129 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.61 | USD | 20251127 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.35 | USD | 20251127 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.98 | USD | 20251125 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.33 | USD | 20251123 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.37 | USD | 20251119 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 945.58 | USD | 20251118 |