| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 325.02 | USD | 20251208 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.83 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.02 | USD | 20251208 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 423.94 | USD | 20251208 |
| China national standards | MT | 381.55 | USD | 20251208 | |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 332.09 | USD | 20251208 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 346.22 | USD | 20251208 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.29 | USD | 20251208 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |