Spectroscopy analysis showed that Seamoon and Haifu booster (as the national yellow ones call it) have absolutely identical composition. The only difference is that yellow contains a dye. There is no other difference!!!
Mini revival of the thread, I got into reaserching for the boosters again because I'm looking to get back into Chinese rubbers, and I found these videos.
It seems that the national doesn't only not have the same composition to seamoon, but they are completely different.
National yellow is thicker and stickier and has completely different playing characteristics, they are much stronger and greater than normal seamoon.
So there is a difference, and a big one at that.
We're always talking about the real national haifu because there's tons of fakes going around.
Here's the videos.