| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 975.66 | USD | 20250617 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1198.67 | USD | 20250617 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 975.08 | USD | 20250616 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1197.96 | USD | 20250616 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 973.76 | USD | 20250614 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1196.34 | USD | 20250614 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1036.36 | USD | 20250613 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1029.41 | USD | 20250613 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1196.34 | USD | 20250613 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 973.76 | USD | 20250613 |