| Vendor | Spec | Unit | Price | Currency | Date |
| Zhenjiang UnionChem | China national standards | MT | 2491.21 | USD | 20260528 |
| Shandong Chambroad | China national standards | MT | 2432.59 | USD | 20260528 |
| Heze Dingtai | China national standards | MT | 2564.48 | USD | 20260528 |
| Heze Junshu | China national standards | MT | 2637.75 | USD | 20260528 |
| Shandong Ming Hao | China national standards | MT | 2564.48 | USD | 20260528 |
| Zhenjiang UnionChem | China national standards | MT | 2489.35 | USD | 20260527 |
| Shandong Chambroad | China national standards | MT | 2430.77 | USD | 20260527 |
| Heze Dingtai | China national standards | MT | 2562.56 | USD | 20260527 |
| Heze Junshu | China national standards | MT | 2782.21 | USD | 20260527 |
| Shandong Ming Hao | China national standards | MT | 2562.56 | USD | 20260527 |