| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.58 | USD | 20251031 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.32 | USD | 20251031 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 987.81 | USD | 20251030 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.59 | USD | 20251030 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1001.92 | USD | 20251030 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 945.47 | USD | 20251030 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 988.1 | USD | 20251029 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.95 | USD | 20251029 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1213.95 | USD | 20251029 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.92 | USD | 20251028 |