| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber | N220 | MT | 1028.56 | USD | 20251020 |
| Shandong Junfeng | N220 | MT | 986.29 | USD | 20251020 |
| Shandong Junfeng | China national standards | MT | 1211.73 | USD | 20251020 |
| Shanxi Hengxin Chem | N220 | MT | 1211.73 | USD | 20251020 |
| Shandong Junfeng | N220 | MT | 986.62 | USD | 20251017 |
| Shanxi Hengxin Chem | N220 | MT | 1212.14 | USD | 20251017 |
| Shandong Junfeng | China national standards | MT | 1212.14 | USD | 20251017 |
| Dongguan Canyu Chem | N220 | MT | 1042.72 | USD | 20251016 |
| Shanxi Hengxin Chem | N220 | MT | 1000.45 | USD | 20251016 |
| Hebei Shibei Rubber | N220 | MT | 1042.72 | USD | 20251016 |