| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 235.3 | USD | 20251020 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 239.61 | USD | 20251018 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 239.61 | USD | 20251017 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 239.54 | USD | 20251016 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 239.45 | USD | 20251015 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 239.37 | USD | 20251014 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 239.41 | USD | 20251013 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 244.9 | USD | 20251011 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 244.9 | USD | 20251010 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 244.72 | USD | 20251009 |