| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.55 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.56 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.58 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.6 | USD | 20250729 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 419.52 | USD | 20250729 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 419.52 | USD | 20250729 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 419.52 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.81 | USD | 20250728 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.79 | USD | 20250728 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 419.77 | USD | 20250728 |