| Vendor | Spec | Unit | Price | Currency | Date |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 419.6 | USD | 20250801 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 335.69 | USD | 20250731 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 419.62 | USD | 20250731 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 419.62 | USD | 20250731 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 419.62 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.64 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.65 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.68 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.67 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.93 | USD | 20250730 |