| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1243.15 | USD | 20250908 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.46 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1242.54 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1242.54 | USD | 20250905 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.46 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1242.75 | USD | 20250904 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1125.94 | USD | 20250904 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.68 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1241.77 | USD | 20250903 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1125.05 | USD | 20250903 |