| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 316.55 | USD | 20251208 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 332.09 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.62 | USD | 20251208 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.83 | USD | 20251208 |
| China national standards | MT | 367.42 | USD | 20251208 | |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 395.77 | USD | 20251207 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 424.03 | USD | 20251207 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 381.63 | USD | 20251207 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 424.03 | USD | 20251207 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.63 | USD | 20251207 |