| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.58 | USD | 20250818 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.29 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.31 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.32 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.5 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.49 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.47 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.4 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.42 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.43 | USD | 20250813 |