| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.0 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 885.73 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 885.73 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.26 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.26 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.99 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.62 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 887.22 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.96 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 886.52 | USD | 20250905 |