| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | China national standards | MT | 1214.07 | USD | 20251107 |
| Shanxi Hengxin Chem | N220 | MT | 1214.07 | USD | 20251107 |
| Shandong Junfeng | N220 | MT | 987.79 | USD | 20251106 |
| Shanxi Hengxin Chem | N220 | MT | 1213.58 | USD | 20251106 |
| Shandong Junfeng | China national standards | MT | 1213.58 | USD | 20251106 |
| Dongguan Canyu Chem | N220 | MT | 987.79 | USD | 20251106 |
| Hebei Shibei Rubber | N220 | MT | 973.68 | USD | 20251106 |
| Shanxi Hengxin Chem | N220 | MT | 931.35 | USD | 20251106 |
| Shandong Junfeng | N220 | MT | 987.29 | USD | 20251105 |
| Shanxi Hengxin Chem | N220 | MT | 1212.96 | USD | 20251105 |