| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 351.36 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.52 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.5 | USD | 20250928 |
| Tianjin Shengtongtai Chemical Co., Ltd. | China national standards | MT | 351.36 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.41 | USD | 20250928 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 365.41 | USD | 20250928 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.63 | USD | 20250928 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 365.41 | USD | 20250927 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 365.41 | USD | 20250927 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.63 | USD | 20250927 |