| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | N220 | MT | 1081.34 | USD | 20250416 |
| Shandong Junfeng | China national standards | MT | 1386.33 | USD | 20250416 |
| Dongguan Canyu Chem | N220 | MT | 1178.98 | USD | 20250415 |
| Hebei Shibei Rubber | N220 | MT | 1220.59 | USD | 20250415 |
| Hebei Shibei Rubber | N220 | MT | 1220.75 | USD | 20250411 |
| Dongguan Canyu Chem | N220 | MT | 1206.88 | USD | 20250411 |
| Dongguan Canyu Chem | N220 | MT | 1207.7 | USD | 20250408 |
| Hebei Shibei Rubber | N220 | MT | 1221.58 | USD | 20250408 |
| Hebei Shibei Rubber | N220 | MT | 1225.75 | USD | 20250402 |
| Dongguan Canyu Chem | N220 | MT | 1211.82 | USD | 20250402 |