| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 335.85 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.83 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.83 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.84 | USD | 20250722 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.85 | USD | 20250722 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 419.82 | USD | 20250722 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 335.56 | USD | 20250721 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 419.45 | USD | 20250721 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 405.47 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.52 | USD | 20250721 |