| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 381.5 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.24 | USD | 20251209 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.24 | USD | 20251209 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.5 | USD | 20251209 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.79 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.57 | USD | 20251209 |
| China national standards | MT | 395.63 | USD | 20251209 | |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.79 | USD | 20251209 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.79 | USD | 20251209 |
| China national standards | MT | 296.72 | USD | 20251209 |