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

“For us, the focus is on quality”

  • Glass Congress 2025 in Dresden

    The 15th Glass Congress 2025 of the Bundesverband Flachglas and the Gütegemeinschaft Flachglas will take place from May 7 – 8, 2025 in Dresden. We look forward to welcoming you […]

  • 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
    • […]

  • Marketing-Paket für GGF Gütezeichen Träger

    Um unsere Gütezeichen Träger (MIG und ESG-HF) bestmöglich bei ihrer Kommunikation zu unterstützen, haben wir ein umfassendes Marketing-Paket zusammengestellt. Dieses enthält:

    • 1 Roll-up-Banner
    • 1 Hissflagge
    • 2 wetterfeste Outdoor-Aufkleber (40 x […]

Welcome to the Gütegemeinschaft Flachglas e. V.

The Gütegemeinschaft Mehrscheiben-Isolierglas (GMI) was founded on May 7, 1982 for the purpose of quality assurance and quality monitoring of multi-pane insulating glass (MIG). At the members’ meeting on April 11, 2018, it was then decided to introduce an additional, new quality mark for heat-strengthened single-pane safety glass (ESG-HF) and to rename the quality association Gütegemeinschaft Flachglas (GGF). Every insulating and safety glass manufacturer who wants to label his product with these RAL quality marks must commit to the GGF’s quality and testing regulations.

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“For us, the focus is on quality”

Jochen Grönegräs, Managing Director of GGF, briefly summarizes the most important advantages for holders of the MIG or ESG-HF quality mark in the video above. By means of the quality mark it is immediately recognizable that the product meets the high quality requirements according to RAL. MIG or ESG-HF with the RAL quality mark give planners and builders the security of having purchased a durable quality product – a product that has been thoroughly tested and meets the highest requirements. The quality mark provides the consumer with an unmistakable touchstone that offers him the necessary security for his purchase decision and protects him from unpleasant surprises in the long term. The manufacturer can thus communicate to the consumer in the simplest way possible: “For us, quality is the focus”.

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.

Glas ist Gut

Excellence

Internet presence of the BF for interested end users with current topics about the material flat glass and its fields of application.

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.

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