| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.41 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.5 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.52 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.52 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.5 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.41 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.9 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.01 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.01 | USD | 20250924 |