| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber | N220 | MT | 1083.65 | USD | 20250915 |
| Hebei Shibei Rubber | N220 | MT | 1083.56 | USD | 20250910 |
| Dongguan Canyu Chem | N220 | MT | 1055.42 | USD | 20250910 |
| Shandong Junfeng | China national standards | MT | 1210.21 | USD | 20250910 |
| Shandong Junfeng | N220 | MT | 985.06 | USD | 20250910 |
| Hebei Shibei Rubber | N220 | MT | 1084.38 | USD | 20250909 |
| Dongguan Canyu Chem | N220 | MT | 1056.22 | USD | 20250909 |
| Shandong Junfeng | N220 | MT | 985.51 | USD | 20250908 |
| Shandong Junfeng | China national standards | MT | 1210.77 | USD | 20250908 |
| Shandong Junfeng | N220 | MT | 985.03 | USD | 20250906 |