Im not exactly sure what you are asking here... I've never heard of "20x strength" MHRB. Sounds like a marketing term, although I could be wrong. It just depends on where your bark comes from, how fresh it is, ect. ect... It (SHOULD) always yield deemsters after you do a correct extraction. Depends on quality of bark, and if your vendor "cuts" it, to depend on yield. Impossible to say what your content is.
Just do your tek and let us know!
Your lucky to still be able to find MHRB. Practically every vendor has stopped selling within the US, and shipping to the US. Fuck customs.