Learn Dutch: Qua hardware is dit vernieuwde product aanzienlijk beter. - In terms of hardware, this renewed product is significantly better.

The preposition qua (meaning "in terms of" or "regarding") is almost always followed directly by a bare noun. You just say qua hardware, not qua de hardware.

Why is the verb is placed before the subject dit vernieuwde product?

Because the sentence starts with the adverbial phrase qua hardware. In Dutch, whenever a main clause starts with something other than the subject, it triggers inversion. This puts the verb is right before the subject.

Could I add gezien here and say qua hardware gezien?

Native speakers sometimes do this in casual speech, but it is considered incorrect (a pleonasm). You should use either qua hardware or hardwarematig gezien, but you shouldn't mix the two constructs together.

Product is a het word, so why does vernieuwde get an -e at the end?