| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.33 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 942.53 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 844.06 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.07 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 908.11 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 936.26 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 943.3 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 844.75 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | Industrial Grade | MT | 907.73 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.7 | USD | 20250915 |