| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.76 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.86 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.89 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.89 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.06 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.18 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.22 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.06 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.02 | USD | 20250915 |