| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.12 | USD | 20250916 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1126.33 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1243.19 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1242.68 | USD | 20250915 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.61 | USD | 20250915 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.27 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1243.33 | USD | 20250912 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.0 | USD | 20250911 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1243.07 | USD | 20250911 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.5 | USD | 20250910 |