Fulfilling our clients is critical to us and we've been sorry our merchandise didn’t satisfy your anticipations. Beneath are the details of our refund and return coverage for your reference.挖矿硬件的使用寿命受使用强度、温度、湿度和灰尘等环境因素的影响。适当的维护和最佳条件可以显著延长其使用寿�