| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1169.76 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.41 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.41 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.37 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1191.39 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.16 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1204.33 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.12 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1190.33 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1169.32 | USD | 20250806 |