Giant (along with Merida) is probably the most common big brand seen here in China. I've had my Giant (which is a fairly low end model) for 11 years / 25000+ km, and the frame is still in excellent condition. I also had a nice relatively low end Giant MTB when I lived back in Canada more than 20 years ago. I think Giant makes great quality bikes, from the low end all the way to the high end.