| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | N220 | MT | 989.36 | USD | 20251210 |
| Shanxi Hengxin Chem | N220 | MT | 961.09 | USD | 20251210 |
| Hebei Shibei Rubber | N220 | MT | 989.36 | USD | 20251210 |
| Shanxi Hengxin Chem | N220 | MT | 1003.49 | USD | 20251210 |
| Dongguan Canyu Chem | N220 | MT | 989.36 | USD | 20251210 |
| Shanxi Hengxin Chem | N220 | MT | 1003.21 | USD | 20251209 |
| Shandong Junfeng | N220 | MT | 989.08 | USD | 20251209 |
| Shandong Junfeng | China national standards | MT | 1215.15 | USD | 20251209 |
| Shanxi Hengxin Chem | N220 | MT | 1003.34 | USD | 20251208 |
| Shandong Junfeng | N220 | MT | 989.2 | USD | 20251208 |