| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.31 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.54 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.28 | USD | 20250805 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.1 | USD | 20250805 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.98 | USD | 20250805 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.59 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.78 | USD | 20250804 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.53 | USD | 20250804 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1258.81 | USD | 20250801 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1118.94 | USD | 20250801 |