I have 2 Tablet :
n.1 is a Chuwi Hi10 CW1515. It work Fine.
the second one is Chuwi Hi10 Air CW1529 I had problems with bios . To fix it I replaced Motherboard damaging lcd display flat cable. To much expensive fixing it. To replace flat cable I have to buy also lcd display because Chuwi service doesn’t sale only flat cable.