| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.13 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.28 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.28 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.56 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.55 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.55 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.56 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 862.01 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.99 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.23 | USD | 20250806 |