OK so it is clear that you will support your natural products over the “Generically called” Composite.
If you insist on persuing this generalisation be aware – in simple terms you can’t. It’s like saying all timber has knots in it, all metal goes rusty and a grizzly bear never takes a dump in the woods! – when it clearly these statements are wrong.
If you have a particular manufacturer of a product that is offering a warrenty and you are suggesting that this individual manufacturer is falling short, by all means, show your evidence and be specific about one product and stop generalising.
I am sure that any worthy manufacturer will prove to the contrary.