| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber | N220 | MT | 1042.72 | USD | 20251016 |
| Shandong Junfeng | N220 | MT | 986.36 | USD | 20251016 |
| Shandong Junfeng | China national standards | MT | 1211.81 | USD | 20251016 |
| Shandong Junfeng | N220 | MT | 985.98 | USD | 20251015 |
| Shandong Junfeng | China national standards | MT | 1211.35 | USD | 20251015 |
| Shanxi Hengxin Chem | N220 | MT | 1211.35 | USD | 20251015 |
| Hebei Shibei Rubber | N220 | MT | 1042.33 | USD | 20251015 |
| Shanxi Hengxin Chem | N220 | MT | 1000.07 | USD | 20251015 |
| Dongguan Canyu Chem | N220 | MT | 1042.33 | USD | 20251015 |
| Jinan Jinquanjin | China national standards | MT | 1900.85 | USD | 20251014 |