| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.88 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1238.05 | USD | 20250818 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1121.67 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.2 | USD | 20250815 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.02 | USD | 20250815 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1121.44 | USD | 20250814 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.62 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.79 | USD | 20250814 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1121.23 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.56 | USD | 20250813 |