| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 422.21 | USD | 20250930 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 422.01 | USD | 20250929 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 344.64 | USD | 20250929 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 400.91 | USD | 20250929 |
| China national standards | MT | 407.94 | USD | 20250929 | |
| Hualu Holdings Group Co., Ltd. | China national standards | MT | 414.97 | USD | 20250929 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 341.83 | USD | 20250929 |