| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 404.77 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.55 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.09 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.31 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.34 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.34 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.31 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.09 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.09 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.31 | USD | 20250923 |