Raos cartridge

Anyone heard about the Raos cartridge from Taiwan?
No. But I'm pretty sure you just joined up so you could tell us about it. ;-)
Yes, I have the MC5B in my system. Initial impression is extremely open mid-range, as good or maybe better than my Koetsu. Not fully run in yet though.
One of my friend from Taiwan recommended Raos cartridge highly. I can't find any information or dealer in the US (except an Audiogon ad selling MC5B by someone). Please post any info you have, preferably in English. Thx.