Skip to content


Top quality for satisfied customers.

Our production is constantly monitored both by the company itself in our in-house laboratory and by third-party monitoring and certifying authorities to guarantee the quality of our products.

Our quality management procedures are supported by our integrated management system. This comprises both the established ISO certifications (ISO 9001, ISO 14001, OHSAS 18001) and verification of the presence of an energy management system in line with ISO 50001.

Company certificates.

  • ISO 9001:2015 – Quality Management System
  • ISO 14001:2015 – Environmental Management System
  • ISO 45001:2018 – Occupational Health and safety Management System 
  • ISO 50001:2011 – Energy Management System

Product certificates.

  • Certification des Granulats et Sables – Ponts et Chaussées, Luxembourg
  • NL-BSB® productcertificaat – SGS Intron, Netherlands
  • Certificate of In-House Quality Control Compliance – BÜV Hessen Rheinland-Pfalz
  • Certificate of In-House Quality Control Compliance – Gütegemeinschaft Naturstein, Kalk und Mörtel / GG-Cert