| Vendor | Spec | Unit | Price | Currency | Date |
| Unknown | N220 | MT | 968.84 | USD | 20260107 |
| Unknown | China national standards | MT | 968.25 | USD | 20260105 |
| Unknown | China national standards | MT | 825.86 | USD | 20260105 |
| Shanxi Hengxin Chem | N220 | MT | 962.0 | USD | 20251211 |
| Hebei Shibei Rubber | N220 | MT | 990.3 | USD | 20251211 |
| Dongguan Canyu Chem | N220 | MT | 990.3 | USD | 20251211 |
| Shandong Junfeng | China national standards | MT | 1216.65 | USD | 20251211 |
| Shanxi Hengxin Chem | N220 | MT | 1004.44 | USD | 20251211 |
| Shandong Junfeng | N220 | MT | 990.3 | USD | 20251211 |
| Hebei Shibei Rubber | N220 | MT | 989.36 | USD | 20251210 |