| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber | N220 | MT | 1041.81 | USD | 20250710 |
| Shandong Junfeng | China national standards | MT | 1202.11 | USD | 20250709 |
| Shandong Junfeng | N220 | MT | 978.46 | USD | 20250709 |
| Hebei Shibei Rubber | N220 | MT | 1041.87 | USD | 20250707 |
| Dongguan Canyu Chem | N220 | MT | 1034.88 | USD | 20250707 |
| Shandong Junfeng | N220 | MT | 978.94 | USD | 20250707 |
| Shandong Junfeng | China national standards | MT | 1202.7 | USD | 20250707 |
| Shandong Junfeng | China national standards | MT | 1202.21 | USD | 20250704 |
| Shandong Junfeng | N220 | MT | 978.54 | USD | 20250704 |
| Shandong Junfeng | N220 | MT | 978.71 | USD | 20250703 |