A quick phone call to their 1-800 number and they'll tell you these lifts are, "brought in". When pressed they'll finally admit they're made in China. I know as I just got off the phone with them.
Being made in China just means the materials could be (and probably are) substandard. It depends on which foundry the Chicoms used for the steel. Most of their foundries are crap but a couple, on paper at least, do meet US standards. Given that these lifts supposedly meet ISO standards the steel may actually come from one of these compliant foundries. At any rate, with a Chicom lift, I would purchase a heavier duty unit, at least one weight capacity more than you think you'll ever use, just to be safe.