We're a totally distributed workforce committed to delivering the very best copyright mining machines, machines, and providers to advance your mining vocation. 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命。 If defective on arrival, the buyer will receive a comprehensive refund quickly and no return with the miner is needed.... https://used-antminer-bitmain22985.dbblog.net/6412427/bitmain-antminer-s19-xp-hyd-price-cost-vs-performance-comparison