| Vendor | Spec | Unit | Price | Currency | Date |
| China national standards | MT | 367.42 | USD | 20251208 | |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 395.68 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 367.42 | USD | 20251208 |
| China national standards | MT | 390.03 | USD | 20251208 | |
| Suzhou Shangma Chemical Technology Co., Ltd. | China national standards | MT | 395.68 | 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 | 388.62 | USD | 20251208 |
| China national standards | MT | 395.68 | USD | 20251208 |