| Vendor | Spec | Unit | Price | Currency | Date |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1056.2 | USD | 20250514 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1084.0 | USD | 20250514 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 972.34 | USD | 20250513 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1291.83 | USD | 20250513 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1290.48 | USD | 20250512 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 971.33 | USD | 20250512 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1081.91 | USD | 20250509 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1054.16 | USD | 20250509 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 970.94 | USD | 20250509 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1289.96 | USD | 20250509 |