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Gratifying our clients is critical to us and we're sorry our product didn’t meet up with your anticipations. Below are the small print of our refund and return plan for the reference.加密货币矿机硬件领域的领导者，让每一位加密货币爱好者都能实现自己的愿望。*此设备需要比普通矿机更高的电压设置，�