I like what they are doing - seems like they are using clones of Samsung 22" double row strips. I personally like the single row strips so you can space them out better.
I would contact them and ask what they mean by "sun spectrum"
Their coverage estimates, however are a little overly optimistic:
"Our Plate series is our standard fixture running a 238W this light will be perfect to flower a 4x4 tent at a beginner level." Nope, sorry. It will flower a 2x4 quite well, no doubt, but not a 4x4, you would need two of them for that.