| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 360.28 | USD | 20251127 |
| China national standards | MT | 389.95 | USD | 20251127 | |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.21 | USD | 20251127 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 395.6 | USD | 20251127 |
| China national standards | MT | 324.96 | USD | 20251127 | |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.96 | USD | 20251127 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.19 | USD | 20251127 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.96 | USD | 20251127 |