B18 has nothing special apart from filcos (hard to find in asia, at least for me), cherry boards with lasered pbt caps, and ducky thick pbt sets. And they have zowies which is pretty hard to find in asia.
Guanghua is your average IT mall, and I only bought a 1 USD soldapullt tip from there, I found some edsyn soldapullts there but they are not of that high a quality. There were a huge pile of keyboards on sale for 50 twd but I found nothing nice