Product review (4 stars): Good build quality but needs some design improvements
This appears to be the same product as in other brand names like Golden Vintage or AKDY. It's sturdy, powerful and looks good. Easy to clean as advertised. Unlike some other customers I'm not annoyed by the beeping sound or dim lights although I do plan to replace the lights later. Bad instructions? Yes but that didn't bother me either. In my opinion this is as good as what my friend has bought for a lot more $.

Now here are the reasons I'm only rating it a four star:
1. My original Sakura range was 25" deep and this one 22". Also the fans of the Sakura were in front and directly above the power burner, which made cleaning them a pain in the butt but they do seem more efficient in sucking out the odor and everything. Here they're in the back under the vent, leaving a couple of inches in front for the lights. This along with the 3" difference seems to make it less efficient especially when I leave all windows closed. I consider that a design issue and looked hard for one that's deeper or has fans in front. I found none for the under-cabinet type.
2. Yes leaving one of the kitchen window open just slightly makes a big difference to me, so that might be an indication how powerful it is. But even with that by my estimation its sucking power is equivalent to my old Sakura, which was rated 600CFM.
3. By a simple iPhone app I measured noise level when it's on high to be about 72 dB just 3 feet away. No big deal to me because that still seems slightly better than my old Sakura, which again was rated 600CFM.