| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | China national standards | MT | 1292.8 | USD | 20250521 |
| Shandong Junfeng | N220 | MT | 973.07 | USD | 20250521 |
| Hebei Shibei Rubber | N220 | MT | 1035.71 | USD | 20250520 |
| Dongguan Canyu Chem | N220 | MT | 1035.71 | USD | 20250520 |
| Shandong Junfeng | N220 | MT | 973.15 | USD | 20250520 |
| Shandong Junfeng | China national standards | MT | 1292.91 | USD | 20250520 |
| Shandong Junfeng | China national standards | MT | 1293.18 | USD | 20250519 |
| Shandong Junfeng | N220 | MT | 973.36 | USD | 20250519 |
| Shandong Junfeng | N220 | MT | 972.72 | USD | 20250515 |
| Shandong Junfeng | China national standards | MT | 1292.33 | USD | 20250515 |