| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1258.35 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1234.59 | USD | 20250721 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1118.54 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1235.0 | USD | 20250718 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1258.78 | USD | 20250718 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1235.64 | USD | 20250717 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1119.49 | USD | 20250717 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1259.43 | USD | 20250717 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1258.28 | USD | 20250716 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1234.52 | USD | 20250716 |