| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 946.41 | USD | 20251202 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 974.66 | USD | 20251202 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 960.53 | USD | 20251202 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1214.79 | USD | 20251202 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1214.79 | USD | 20251202 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1215.39 | USD | 20251201 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 989.27 | USD | 20251201 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1215.39 | USD | 20251201 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1214.88 | USD | 20251128 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 988.85 | USD | 20251128 |