Funny enough, I think the answer is in the details. While Jor-El is explaining the suit functions to Jon, he calls it "ancient portable Kryptonian tech."
Based on what we know so far, this likely means one of two things. 1) during Jor-El's travels in time and space (which were implied to be a good deal longer than Jon's 5 or 6 years), he got this tech from old Krypton. 2) It's ancient tech that Jor-El has been holding onto for some time, and it's not easily duplicated.
I'd bet that option one is the likely one. The main hawkguy from issue 14 said that there were secrets from hundreds of years ago linked to Jor-El and Krypton. And in issue 10 when Jor saved Jon he talked about the depths he had to go to and the deals he had to make while out there in time and space.
But as of, no, we don't know, but Jor-El's still dripping with mystery.