Our 2015 Jayco came with an unknown Chinese brand that was a piece of crap and had faulty manufacturing from the get go. The dealer sent a replacement manufactured by Stromberg Carlson. Can't speak if it's any better yet as we are installing it as I type.
I'll try and find the brand of our generic Chinese model so people can stay away from it.
ETA: oops, someone already mentioned Stromberg Carlson.
And our generic Chinese one is only labelled as an HH-3500 which Googling tells me may be "Jack Quick". Not certain if that's different than QuickJack mentioned above...maybe a knock off. Works only as good as a knock off. Ha ha.