The profitability chart shows the income from mining the most successful coin on EZ100 Professional with a presented working day minus the energy expenses. All product sales are last and non-refundable just after shipment, but we offer maintenance and substitute solutions if you can find technical concerns with your miner. https://bombax-miner-buy29472.theideasblog.com/40016851/bombax-miner-ez100-vs-ez100-pro-comparison