| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 988.85 | USD | 20251128 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1215.05 | USD | 20251127 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 988.99 | USD | 20251127 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 974.63 | USD | 20251126 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 946.38 | USD | 20251126 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1214.76 | USD | 20251126 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1214.76 | USD | 20251126 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 988.76 | USD | 20251126 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 960.51 | USD | 20251126 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 988.34 | USD | 20251125 |