| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.72 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 897.15 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.99 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.13 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.3 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 896.58 | USD | 20250809 |