| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.94 | USD | 20251014 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.94 | USD | 20251014 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 690.07 | USD | 20251013 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 690.07 | USD | 20251013 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.67 | USD | 20251011 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.67 | USD | 20251011 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.67 | USD | 20251010 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.67 | USD | 20251010 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.15 | USD | 20251009 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 689.15 | USD | 20251009 |