Just in case the hashrate of your sent mining system is lower than 300TH/s, BITMAIN will refund the actual difference Based on $/T. Cookies are tiny text data files which can be used by websites to create a consumer's expertise additional effective. Hunting to acquire a Antminer Z15 Professional? https://bitmain-antminer-price34531.ampedpages.com/bitmain-antminer-pricing-explained-for-buyers-66339721