| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.84 | USD | 20250819 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.27 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 862.29 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.69 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.68 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 848.09 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 862.11 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.95 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.93 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 847.13 | USD | 20250812 |