Chinese arms industries is very different from those of NATO countries, especially that of Uncle Sam. They are highly centrally controlled. Everything is tightly choreographed by the central planning body of the PLA. Although many arms of the crown companies do have publicly traded stocks, but they still answer to the government and the military, not their shareholders.
So I highly doubt that J-31 is something out of Shenyang's own will without the blessing of the PLA.
Exactly my thoughts !
Anyway, any info on who these guys are ???