| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber | N220 | MT | 1013.67 | USD | 20250721 |
| Shandong Junfeng | N220 | MT | 978.72 | USD | 20250721 |
| Shandong Junfeng | China national standards | MT | 1202.43 | USD | 20250721 |
| Hebei Shibei Rubber | N220 | MT | 1014.54 | USD | 20250717 |
| Dongguan Canyu Chem | N220 | MT | 1021.54 | USD | 20250717 |
| Shandong Junfeng | China national standards | MT | 1203.45 | USD | 20250717 |
| Shandong Junfeng | N220 | MT | 979.56 | USD | 20250717 |
| Shandong Junfeng | N220 | MT | 978.67 | USD | 20250716 |
| Shandong Junfeng | China national standards | MT | 1202.36 | USD | 20250716 |
| Shandong Junfeng | China national standards | MT | 1202.83 | USD | 20250715 |