HI
We are familiar with Stonhard. They are a division of Rustoleum that caters to large commercial and industrial and pharmaceutical companies. They sell via direct sales force and hire independent installers. They are know for very good quality and super high pricing. You would need to contact them for a price, but to our knowledge they don't do residential work if this is the nature of your project. Our
www.prep-crete.com Install Division competes with them daily in the NYC metro area and often get our materials approved instead of theirs.
There is nothing that Stonhard makes that we don't offer a 'for equal' with, but you would need to tell us which version you are interested in as the Stonclad comes in different versions (GR, GS, etc).
Best to contact us directly once you determine the system you want.