| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 450.36 | USD | 20251005 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 450.36 | USD | 20251004 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20251004 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20251004 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 450.36 | USD | 20250930 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 365.74 | USD | 20250929 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 365.74 | USD | 20250929 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 450.14 | USD | 20250929 |