| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.79 | USD | 20250814 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.62 | USD | 20250814 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1121.23 | USD | 20250813 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.39 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.56 | USD | 20250813 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.19 | USD | 20250812 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.17 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.38 | USD | 20250812 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.42 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.37 | USD | 20250811 |