| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber | N220 | MT | 1048.53 | USD | 20250904 |
| Dongguan Canyu Chem | N220 | MT | 1055.56 | USD | 20250904 |
| Shandong Junfeng | N220 | MT | 985.19 | USD | 20250904 |
| Shandong Junfeng | China national standards | MT | 1210.38 | USD | 20250904 |
| Shandong Junfeng | China national standards | MT | 1209.43 | USD | 20250903 |
| Shandong Junfeng | N220 | MT | 984.68 | USD | 20250902 |
| Shandong Junfeng | China national standards | MT | 1209.75 | USD | 20250902 |
| Dongguan Canyu Chem | N220 | MT | 1055.27 | USD | 20250901 |
| Hebei Shibei Rubber | N220 | MT | 1048.23 | USD | 20250901 |
| Shandong Junfeng | China national standards | MT | 1210.04 | USD | 20250901 |