| Vendor | Spec | Unit | Price | Currency | Date |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1282.41 | USD | 20250227 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1324.37 | USD | 20250226 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1282.55 | USD | 20250226 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1283.2 | USD | 20250221 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1325.04 | USD | 20250221 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1283.03 | USD | 20250219 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1199.41 | USD | 20250217 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1199.34 | USD | 20250214 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1255.13 | USD | 20250214 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1255.06 | USD | 20250212 |