| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.1 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.1 | USD | 20250806 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 336.09 | USD | 20250806 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 420.12 | USD | 20250806 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 336.29 | USD | 20250805 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 420.37 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.32 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.31 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.34 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.34 | USD | 20250805 |