| Vendor | Spec | Unit | Price | Currency | Date |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 945.33 | USD | 20251121 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1212.89 | USD | 20251120 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.24 | USD | 20251120 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1213.46 | USD | 20251119 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.46 | USD | 20251119 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 987.7 | USD | 20251119 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 973.81 | USD | 20251118 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 945.58 | USD | 20251118 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 959.69 | USD | 20251118 |
| Shanxi Hengxin Chemical Co., Ltd. | N220 | MT | 1213.73 | USD | 20251118 |