| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 947.01 | USD | 20251206 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.74 | USD | 20251206 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 947.22 | USD | 20251204 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.95 | USD | 20251204 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.68 | USD | 20251203 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.94 | USD | 20251203 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.41 | USD | 20251202 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.16 | USD | 20251202 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 918.61 | USD | 20251201 |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 946.88 | USD | 20251201 |