| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 363.52 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.54 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.5 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.49 | USD | 20250721 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 405.61 | USD | 20250719 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 405.61 | USD | 20250718 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 391.62 | USD | 20250718 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 384.63 | USD | 20250718 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 349.66 | USD | 20250718 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 419.59 | USD | 20250718 |