"Well I came for the demo for the WE X SUJI mini roaster 100 . Stefanus was very patient and helpful. I was given a very detail introduction to coffee roasting . Stefanus had demo the roaster by roasting a few batches of coffee. The coffee roaster did not emit much smoke and still produce a pretty decent and even roast. The roaster has a pretty solid build. The price tag is a plus point for me."