Their is far too much speculation about what shirt DPR Korea will be wearing, as you all know it is the black hole of the planet as far as information is concerned as well as other things.
The kit DPR Korea wore in the match against Mexico was from a local Mexican kit maker called Pirma because their normal equipment had been lost.
I think the staff are all wearing Hummel as it was their old manufacturer and they are probably all the training wear they have available.
Also in an earlier friendly match against Venezuela they had to use Venezuela's away kit because of the loss of theirs.
I don't think their is any way to know for sure until the World Cup comes around unless FIFA release what kits teams have registered.
What I have read is that the kits DRPK were due to wear were by the manufacturer Erke.