| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.55 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.86 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 883.32 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.71 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 883.13 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.97 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.13 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.29 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.58 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 882.58 | USD | 20250808 |