| Vendor | Spec | Unit | Price | Currency | Date |
| Shifang Yufeng Chem | China national standards | MT | 777.62 | USD | 20260605 |
| Shandong Tianyi Chem | Agricultural Grade | MT | 623.31 | USD | 20260603 |
| Shifang Aoxin | Industrial Grade | MT | 733.31 | USD | 20260603 |
| Lvliang Tianfeng | Agricultural Grade | MT | 652.65 | USD | 20260603 |
| Linyi Zhongbo | Agricultural Grade | MT | 630.8 | USD | 20260601 |
| Weifang Shengxing | Agricultural Grade | MT | 623.47 | USD | 20260601 |
| Weifang Shengxing | Agricultural Grade | MT | USD | 20260525 | |
| Tai'an Huayang | Agricultural Grade | MT | USD | 20260525 | |
| Lvliang Tianfeng | Agricultural Grade | MT | USD | 20260525 | |
| Linyi Zhongbo | Agricultural Grade | MT | USD | 20260518 |