Your advantages to other fastening methods:

? Good price-performance ratio because of optimised material usage

? Maximal economic life-span because of high-quality materials

? No maintenance or consequential costs

? Minimal module restraints by the use of stable cross beams

? Fast assembly

? Absolutely reliable earthing connections in the whole framework

? Retrofit lightning protection system

? Height differences can be compensated easily

? The mounting can also be done by unexercised helps