Electricity fee varies according to hashrates. As many Z11 units have run more than one year, the hashrates are not enough, many units need to repair. This is the challenge of permanent hashrates. We are working on it to repair those miners. Just moving make things worse. We seek your kind understanding.
Bitmain, your parent company, is literally the manufacturer of these units. If they're defective, you can make more to replace them or to make up the difference.
Power disruptions are one thing, but this is completely different. Are you really saying that you don't guarantee the listed hashrate of your own units that you manufactured and host in your own data centers that you have on your own hashing pool that people are buying the hashrate to on your own market?