All Whatsminer series，s9,l3+，all innosilicon series,t17,t17e,s17+ Located in the center of Moscow, it has rich experience in mining machine maintenance and professional maintenance masters. At the same time, it can provide mining machine, computer, and industrial equipment maintenance courses to help solve all customer problems.Can repair Antminers9/13/s17/t17.whatsminerm20//m21s/m30.innosilicot2t/t2tz/t2th, the person in charge of the company is Vallei, the person is very friendly, if you want to repair the machine, you can contact him, he is the company the main person in charge of