| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.69 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 862.11 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.09 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.93 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.95 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.13 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.13 | 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 |