| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chem | N220 | MT | 1003.34 | USD | 20251208 |
| Shandong Junfeng | N220 | MT | 989.41 | USD | 20251205 |
| Shandong Junfeng | China national standards | MT | 1215.56 | USD | 20251205 |
| Shanxi Hengxin Chem | N220 | MT | 947.01 | USD | 20251205 |
| Hebei Shibei Rubber | N220 | MT | 961.14 | USD | 20251205 |
| Dongguan Canyu Chem | N220 | MT | 975.28 | USD | 20251205 |
| Shanxi Hengxin Chem | N220 | MT | 1003.55 | USD | 20251205 |
| Shandong Junfeng | China national standards | MT | 1215.84 | USD | 20251204 |
| Shandong Junfeng | N220 | MT | 989.64 | USD | 20251204 |
| Shanxi Hengxin Chem | N220 | MT | 1003.77 | USD | 20251204 |