| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | N220 | MT | 973.76 | USD | 20250605 |
| Shandong Junfeng | N220 | MT | 973.76 | USD | 20250604 |
| Shandong Junfeng | China national standards | MT | 1293.72 | USD | 20250604 |
| Hebei Shibei Rubber | N220 | MT | 1064.18 | USD | 20250604 |
| Dongguan Canyu Chem | N220 | MT | 1057.23 | USD | 20250604 |
| Shandong Junfeng | N220 | MT | 973.99 | USD | 20250603 |
| Shandong Junfeng | China national standards | MT | 1294.02 | USD | 20250603 |
| Shandong Junfeng | N220 | MT | 974.28 | USD | 20250530 |
| Shandong Junfeng | China national standards | MT | 1294.4 | USD | 20250530 |
| Shandong Junfeng | China national standards | MT | 1293.34 | USD | 20250529 |