| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 984.45 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 984.74 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 985.54 | USD | 20250916 |