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Committed to progress by tradition.

As one of the world's leading quartz glass manufacturers in telecommunications and special applications, we stand by you as a strong partner. Our products and solutions are the foundation for a digitally connected world. Let's drive innovations together.


About us

Heraeus Comvance is a part of the Heraeus Group, which is a broadly diversified and globally leading family-owned technology company, headquartered in Hanau, Germany. 

Heraeus Comvance has significantly contributed to the optical data transmission technology with its sites in Europe, North America and China. Our product portfolio includes high purity fused silica tubes for core rod manufacturing, large RIC® cylinders as cladding for telecom fibers and preform manufacturing services.

Innovative solutions for the fiber optics industry: Focus on our products and services!

At Heraeus Comvance, we specialize in providing critical components and materials for the fiber optic industry. Our advanced RIC® cylinders and tubes are designed to enhance the performance and reliability of telecommunication networks. We also offer preform manufacturing services to ensure fiber manufacturers have high-quality preforms for their production processes. We are dedicated to quality and innovation, continuously developing the next generation of optical fibers to meet the evolving market demands. Together with our customers, we shape and advance the industry.

Our promise of quality

Heraeus is a world leader in the production of the highest quality glass fibers. Our reputation is built on our commitment to quality, traceability and consistency. Our state-of-the-art facilities and rigorous testing at all stages of the manufacturing process ensure the quality of our products. We meet industry standards, comply with regulatory requirements and are ISO certified. We focus on continuous improvement and use our innovation to exceed our customers' expectations. Our quality promise stands for on-time and reliable service and outstanding product performance.

Our commitment to a greener future

As an energy-intensive company, we acknowledge the imperative to contribute to a sustainable future. In light of this commitment, we actively engage in promoting environmentally conscious solutions and consistently strive to enhance the sustainability of our business practices.

Our goal is to set industry-wide standards for sustainable business practices. We believe that sustainability is not only a commitment, but also an opportunity to develop innovative solutions, increase our competitiveness and shape a world in which people live prosperously while protecting our planet's natural resources.

Telecom fiber from the start

Heraeus Comvance has a fascinating history and has grown into a global company over the decades. Would you like to learn more about our various locations around the world and how we have continued to improve the technologies used to produce high-quality coatings to this day?

Our locations: Worldwide production, always connected.

  • Bitterfeld-Wolfen, Germany: Headquarter & Cylinder production
  • Brøndby, Denmark: Fiber production
  • Buford, Georgia, United States: Preform & Tube production
  • Wilmington, North Carolina, United States: Accessories production
  • Shanghai, China: Sales office

About Heraeus Group

The Heraeus Group is a broadly diversified and globally leading family-owned technology company, headquartered in Hanau, Germany. The company’s roots go back to a family pharmacy started in 1660. Today, Heraeus bundles diverse activities in the Business Platforms Metals and Recycling, Healthcare, Semiconductor and Electronics as well as Industrials. Customers benefit from innovative technologies and solutions based on broad materials expertise and technological leadership.

In the 2022 financial year, the group generated revenues of €29.1 billion (US$30.6 billion*) with approximately 17,200 employees in 40 countries. Heraeus is one of the top 10 family-owned companies in Germany and holds a leading position in its global markets.

(* calculated with 2022 average exchange rate, 1€ = 1.0530 US$)

More on Heraeus at the Heraeus Corporate Website