| Vendor | Spec | Unit | Price | Currency | Date |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1123.92 | USD | 20250418 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.3 | USD | 20250418 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.56 | USD | 20250418 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1082.06 | USD | 20250417 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1387.25 | USD | 20250417 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 1081.34 | USD | 20250416 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1386.33 | USD | 20250416 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1178.98 | USD | 20250415 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1220.59 | USD | 20250415 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1220.75 | USD | 20250411 |