| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 981.95 | USD | 20250821 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 980.61 | USD | 20250820 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1204.75 | USD | 20250820 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 980.96 | USD | 20250819 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1205.17 | USD | 20250819 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1051.02 | USD | 20250819 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1044.02 | USD | 20250819 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1205.8 | USD | 20250818 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 981.46 | USD | 20250818 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 981.26 | USD | 20250814 |