Our company generally only sells bitmain / innosilicon / mrcrobt brand-new mining machines, and we will also improve and renovate some machines, such as antminer s17pro and S17 +. We have our own exclusive technology, self-developed improved heat dissipation plate, etc. Our maintenance station can repair a large number of damaged mining machines, mainly repair the machines recovered from our own miner filed, and also provide maintenance services to customers.