Probably all low quality, but I’m sure given another couple of years some of these guys will be producing quality boards. Their production pace is blisteringly fast compared to western companies. Multiple electric surfboard offerings. The price is right, but questionable quality.
These are mostly scams. Don’t forget about import fees when sending to US/Eu and also who will service the board after it breaks down? Don’t waste your money on that.
p.s. it’s not like “western” companies are doing them all locally. Most of the parts are still made in china, Thailand etc. It’s all about the proper assembly, logistics and quality control.