| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 336.16 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 392.18 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 385.18 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.17 | USD | 20250804 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 420.2 | USD | 20250804 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 350.16 | USD | 20250804 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 350.16 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.66 | USD | 20250801 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.64 | USD | 20250801 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 419.6 | USD | 20250801 |