| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.98 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.98 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.69 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.06 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.35 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.06 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 899.79 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 899.79 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.06 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.62 | USD | 20250918 |