| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 907.84 | USD | 20251011 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 914.87 | USD | 20251010 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 914.18 | USD | 20251009 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20251008 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20251007 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20251005 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20251004 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 970.61 | USD | 20250929 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 969.75 | USD | 20250927 |