| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.93 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.93 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.15 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.17 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.26 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.48 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.53 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.35 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.31 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 401.09 | USD | 20250915 |