Look for any Table Protector which is same size screen should be OK.................As i is the New Maxisys when you get it it have a screen protector all you got to do is just stick bit of a tape on corners so it don't come out.......................See the link below is the right size as Maxisys 7.9'' Screen.................
http://www.ebay.co.uk/itm/Mocolo-Premium-Tempered-Glass-Film-Screen-Protector-for-Nokia-N1-Tablet-7-9-/221857307644?hash=item33a7b9dbfc:g:2YQAAOSw~gRV05N1