| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chem | N220 | MT | 1213.73 | USD | 20251118 |
| Shanxi Hengxin Chem | N220 | MT | 945.58 | USD | 20251118 |
| Hebei Shibei Rubber | N220 | MT | 959.69 | USD | 20251118 |
| Shandong Junfeng | N220 | MT | 988.48 | USD | 20251117 |
| Shanxi Hengxin Chem | N220 | MT | 1214.41 | USD | 20251117 |
| Shandong Junfeng | China national standards | MT | 1214.41 | USD | 20251117 |
| Shandong Junfeng | China national standards | MT | 1214.41 | USD | 20251117 |
| Shandong Junfeng | N220 | MT | 988.48 | USD | 20251117 |
| Shandong Junfeng | N220 | MT | 988.35 | USD | 20251115 |
| Shandong Junfeng | China national standards | MT | 1214.26 | USD | 20251115 |