| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.43 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.5 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.5 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.43 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.43 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.5 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 864.91 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.84 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.58 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 864.64 | USD | 20250920 |