| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.54 | USD | 20251103 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1213.54 | USD | 20251103 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 973.65 | USD | 20251103 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.77 | USD | 20251103 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 987.77 | USD | 20251103 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 931.32 | USD | 20251103 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.32 | USD | 20251102 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.58 | USD | 20251101 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1213.32 | USD | 20251101 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.58 | USD | 20251031 |