The recognized platform for the highest quality standards in insulating and safety glass

“For us, the focus is on quality”

  • WPK Workshop for MIG Quality Inspectors

    We are pleased to invite you to the first WPK Workshop for MIG Quality Inspectors, taking place on 5 and 6 November 2025 in Troisdorf.

  • Insulating Glass with Quality Guarantee: Energy Efficiency that Pays Off

    Troisdorf. With rising energy costs and the challenges posed by climate change, the energy efficiency of buildings is becoming increasingly important. A decisive factor in how much […]

  • Marketing package for GGF quality mark holders

    We have put together a comprehensive marketing package to provide our quality mark holders (MIG and ESG-HF) with the best possible support for their communication. This includes:

    • 1 roll-up banner

      • […]

Become a RAL quality mark user too!

Gioello

„It is important for the industry to set a mark of quality. The quality mark is also perceived positively by the outside world“ (VIdeo)

Antonio Gioello

Managing Director Sitec Produktions GmbH - Glas Trösch & authorized representative of the SANCO Group

Semar

„The RAL quality mark helps to maintain a high standard of quality“ (VIdeo)

Ernst Semar

Business Director H.B. Fuller | Kömmerling

Maus

„External monitoring gives us proof that the product is always manufactured in consistent quality. This is also important if there are any queries“ (VIdeo)

Ralf Maus

Head of Application Technology / QA / Certifications Glas Trösch

Links to our partner sites

Bundesverband Flachglas e.V.

International

The Bundesverband Flachglas e.V. – the industry’s strong voice for standardization & technology, lobbying and PR.

RAL Quality Mark

Excellence

Internet presence of the RAL quality marks. RAL quality marks are a reliable guide for consumers, companies and the public sector.