| Vendor | Spec | Unit | Price | Currency | Date |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1206.88 | USD | 20250411 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1207.7 | USD | 20250408 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1221.58 | USD | 20250408 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1225.75 | USD | 20250402 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1211.82 | USD | 20250402 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1212.0 | USD | 20250331 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1225.93 | USD | 20250331 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1212.51 | USD | 20250328 |
| Hebei Shibei Rubber Technology Development Co., Ltd. | N220 | MT | 1240.38 | USD | 20250328 |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1212.32 | USD | 20250327 |