| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.01 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.9 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.9 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.83 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.01 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.75 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.65 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.78 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.54 | USD | 20250920 |