| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.73 | USD | 20251020 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1212.14 | USD | 20251017 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 986.62 | USD | 20251017 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1212.14 | USD | 20251017 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1211.81 | USD | 20251016 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 986.36 | USD | 20251016 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1211.81 | USD | 20251016 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1000.45 | USD | 20251016 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1042.72 | USD | 20251016 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1042.72 | USD | 20251016 |