| Vendor | Spec | Unit | Price | Currency | Date |
| 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 | 864.64 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.58 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.58 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 864.64 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.16 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.09 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.79 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.87 | USD | 20250916 |