| Vendor | Spec | Unit | Price | Currency | Date |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 990.3 | USD | 20251211 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1004.44 | USD | 20251211 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 962.0 | USD | 20251211 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 990.3 | USD | 20251211 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 990.3 | USD | 20251211 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1216.65 | USD | 20251211 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 989.36 | USD | 20251210 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1003.49 | USD | 20251210 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 989.36 | USD | 20251210 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 961.09 | USD | 20251210 |