| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.37 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.01 | USD | 20250809 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.82 | USD | 20250809 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.73 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.01 | USD | 20250808 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.82 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.65 | USD | 20250807 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1121.31 | USD | 20250807 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.48 | USD | 20250807 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.31 | USD | 20250806 |