Hey Collo i have been a scafom customer for around 4 years and i have seen prove that SGB has bought cuplok from them and i beleive they were the original manufacturers, also ringscaff has been designed to mix with Layher and Plettac again I have been over to Holland and seen prove of this at first hand, i suppose i have been a customer of theres as they have all the certification and i save around 12% on cost compared to Layher. I would recommend Scafom to anyone.