| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1176.77 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.56 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.56 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.16 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.16 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.38 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.16 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1163.36 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1162.32 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.12 | USD | 20250806 |