| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.22 | USD | 20250422 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.51 | USD | 20250421 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.51 | USD | 20250421 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.83 | USD | 20250421 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.83 | USD | 20250421 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.3 | USD | 20250419 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.56 | USD | 20250419 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1165.55 | USD | 20250418 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1123.92 | USD | 20250418 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.3 | USD | 20250418 |