| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.32 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.21 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.87 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.01 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.98 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.87 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.01 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.08 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.04 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.93 | USD | 20250904 |