| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1096.24 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1096.24 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1076.6 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.71 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1280.66 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.75 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.52 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.71 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.75 | USD | 20250924 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.71 | USD | 20250924 |