| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1014.74 | USD | 20251022 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 972.46 | USD | 20251022 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1212.46 | USD | 20251021 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1212.46 | USD | 20251021 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 986.89 | USD | 20251021 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1211.73 | USD | 20251020 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.73 | USD | 20251020 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1028.56 | USD | 20251020 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 986.29 | USD | 20251020 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1028.56 | USD | 20251020 |