I've made a terrible mistake buying the shower mixer from them on Amazon and ended up NOT PASSING PLUMBING INSPECTION because they don't hold any North American standard certificates. I'm out $800!!! They misrepresent their product saying on their web page "All our product comply totally with US and Canadian specifications and regulations" while their rep. emailed me "The UFG-PA332(it's p/n) does not hold any accreditation or certification." Unfortunately 30 days for the return passed so I can't even return the product. Beware!
P.S. their support in UK time zone, so don't try to call if you're in North America, it's better to email them.