| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.63 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.66 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.66 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.63 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.48 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.54 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.86 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.76 | USD | 20250918 |