| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 329.21 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.23 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 378.24 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.34 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.35 | USD | 20250819 |