| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.66 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.63 | USD | 20250920 |
| Tianjin Shengtongtai Chemical Co., Ltd. | China national standards | MT | 351.48 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.54 | USD | 20250920 |
| Suzhou Shangma Chemical Technology Co., Ltd. | China national standards | MT | 407.72 | USD | 20250920 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 407.72 | USD | 20250920 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 344.45 | USD | 20250920 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.63 | USD | 20250919 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.66 | USD | 20250919 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.77 | USD | 20250919 |