| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.89 | USD | 20251202 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.89 | USD | 20251202 |
| China national standards | MT | 296.64 | USD | 20251202 | |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.26 | USD | 20251202 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 346.07 | USD | 20251202 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.89 | USD | 20251202 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 367.26 | USD | 20251202 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.7 | USD | 20251202 |