| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1200.66 | USD | 20250627 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1200.78 | USD | 20250626 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 977.38 | USD | 20250626 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1032.54 | USD | 20250625 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1039.52 | USD | 20250625 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 976.89 | USD | 20250624 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1200.18 | USD | 20250624 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 976.15 | USD | 20250623 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1199.27 | USD | 20250623 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1038.91 | USD | 20250623 |