| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.38 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.8 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.08 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.47 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.08 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.47 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.67 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.11 | USD | 20250918 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.46 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.98 | USD | 20250916 |