| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20251005 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251004 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20251004 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 1012.81 | USD | 20250929 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 1011.92 | USD | 20250927 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250927 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 1013.27 | USD | 20250925 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250925 |