I've not had any personal experience with that model but I suspect they are Chinese (could be wrong), as all Sealey's other welding equipment is manufactured by Telwin in Italy.
One or two other Chinese MIGs on the market (under various badges) should be avoided like the plague!...nothing but trouble.
I'd spend that bit extra & go for the Telwin manufactured Sealey (red ones, Mightymig etc)
weldequip