I'm not sure, but from what I could see on the web on AG King Tractors, they look like Chinese (Jinma?). I don't think the features, engineering or construction of these is comparable to those of the Korean Kukje (manufacturer of Bransons). Littles things like flat deck floor, down-directed exhaust, shuttle shift, and, above all, quality will make a big difference over the service life of a tractor. I've been very pleased with my Branson 3510 and don't regret paying a little extra for modern quality (although not near as much extra as if buying Orange or Green). Branson's engines are the same as the ones Kukje makes for Cummins, and they seem bullet-proof performers. Good luck!