
Vision & Mission
My dream is for SiLi to remain successful as an independent, internationally active family business in its sixth generation. The Warmensteinach location is and will remain inextricably linked to SiLi.
Stefan Trassl in March 2022
Our vision
Careful use of resources, sound research and long-term planning have always been part of SiLi’s DNA. Our experts are passionate about developing new products and optimising existing ones.
As a reliable partner, we also support social initiatives – both here in the region and at national level. Openness to new ideas, flexibility, independence and a high degree of professionalism are and will remain the values we strive for every day. They form the basis of our actions, both in our relationships with our employees and in our dealings with business partners and customers.
SiLi’s strategy is and will remain focused on consistency, longevity and sustainability. Economic success is the necessary foundation for successfully realising this dream.

Stefan Trassl and
Sohn Benedikt
1995 – …

Heinz Trassl
1979 – 1989

Arno Trassl
1979 – 1997

Hans Trassl
1934 – 1979

Alfons Trassl
1892 – 1934

Sigmund Lindner
1860 – 1892
Our mission
SiLi is aware that glass and ceramic balls and effect glitter are the foundation of the company’s success. This should remain the case in the future.
SiLi will therefore always – and proudly – operate as a niche supplier that maintains and expands its excellent market position. We achieve this goal through constant innovation and the development of new technologies and products by SiLi Technologies GmbH. In addition, we are opening up new areas of application and new markets and are constantly working to optimise our processes.
In addition to our products, we offer our customers product-specific services and profitable added value – for example, the recycling of ceramic balls. We pay attention to CO2 neutrality in product development, production and market development. Minimal resource consumption is just as important to us as reducing harmful emissions. We have been working trustfully with our employees, customers, partners and suppliers for many years.
If necessary, we will outsource parts of our production to partners/joint ventures around the world in order to secure and expand our location and jobs in Warmensteinach in the long term.
Our objectives
- Continuous growth
- Long-term partnerships with market leaders
- State-of-the-art technology
- Most innovative products
- Customer solutions
- Excellent customer service
We are committed to these markets

Pharmaceutical
As the global market leader for glass beads used to mix insulin, our SiLibeads® glass beads ensure the effectiveness of insulin suspensions and support the production of important vaccines. Our work thus contributes to a symptom-free life for diabetics. It also protects against other diseases: our glass beads play an important role in the production of vaccines, for example against shingles.

Water
As an innovation leader, our SiLibeads® glass beads help to ensure the effective and long-lasting operation of drinking water wells and optimise water filtration processes in swimming pools and industrial process and wastewater cycles. Thanks to their suitability for use in well construction, our glass beads help to extract and conserve water as a precious and vital resource.

Wet Grinding
As specialists in the wet grinding of solids in suspensions and dispersions, our SiLibeads® ceramic beads help to make grinding processes efficient, effective and resource-friendly. This benefits manufacturers of paints and coatings, whose end products are used in many areas of everyday life.

Fillers
As experts in the manufacture of SiLibeads® fillers, we help our customers optimise the technical properties of their products. Depending on whether hollow or solid glass beads are used, they influence, for example, the weight, serve as insulation, increase scratch resistance or optimise the flow behaviour of a material. The use of our fillers thus helps to save CO₂ and resources.

Food/Closures
As the market leader in Europe, our SiLibeads® glass balls protect spirits and high-quality edible oils in non-refillable bottles against unauthorised mixing (adulteration). Our safety closures therefore make an important contribution to product purity and protect consumer health.

Cosmetics/Decorative
SiLiglit® effect glitter makes an important contribution to the fashionable and attractive design of a wide variety of products: our glitter is not only used in cosmetics, but also adds a certain sparkle to wall and floor coatings, plastics and textiles. Our newly developed SiLiglam® bioglitter makes a significant contribution to increasing our customers’ sales success and protecting the environment and the world’s oceans.

Additive manufacturing of ceramic components
Our SiLiparts® are a valuable addition to our ceramics portfolio and stand out as components with special geometries and structures that cannot be produced using conventional ceramic manufacturing processes.

Other
Our SiLibeads® are not only used in road markings, but also in many other applications. Whether in technical and industrial areas, for precision in sensitive processes or for uniform mixing in aerosol sprays – their versatility and durability make them a reliable solution for a wide range of applications.
Our company policy
SiLi is a global family business with roots in Warmensteinach, Franconia. We firmly believe that quality, environmental protection, energy efficiency and sustainability are essential pillars for continued success in a globalised world. Our stated goal is therefore to align our processes and workflows with these values and to optimise them on an ongoing basis.
We are aware of our responsibility towards our customers, suppliers, employees and business partners, as well as
the environment and society. That is why we want to achieve our goal of CO₂-neutral, virtually waste-free and fully circular production as quickly as possible. With our sustainable business practices, we are already making an important contribution to an intact environment.
Our strategy is geared towards long-term economic success. The focus is on high product availability and quality. Investments are made on an ongoing basis. The company stands on a solid financial footing with an equity ratio of at least 50 percent.

Quality
Reliability and trust are the keys to good, long-term cooperation. Our customers know that we fulfil their requirements and wishes and that we are familiar with and comply with the regulatory requirements and accreditations of the respective target market. Where necessary, we work in accordance with GMP standards.
We achieve a high level of customer satisfaction by only delivering products after they have undergone the relevant quality checks.
We are always prepared for external audits. Our goal is to pass these without any major deviations.
We continuously improve our processes to ensure long-term success in the markets.
We process complaints promptly and act in the best interests of our customers.
Our qualified and dedicated employees are our most important resource. Regular training and further education are therefore a matter of course and also benefit our business partners.
Our integrated management system is certified according to ISO standards.

Energy and environment
As part of our energy and environmental policy (ISO standard), we set targets, provide the resources necessary to achieve them and monitor their implementation on an ongoing basis.
We comply with our binding commitments.
We use resources such as raw materials, processed materials and energy carefully and continuously optimise our energy consumption. We use the highest possible proportion of recycled materials in production and consider the entire life cycle of the product right from the development stage.
Energy and environmental requirements are also decisive factors in the planning and procurement of services, machinery and equipment.
We are committed to the continuous improvement of our energy and environmental management system, subject ourselves to regular audits by the certification body
and motivate our employees to strive for continuous improvement.
By 2025, we want to manufacture our products in Warmensteinach in a CO₂-neutral manner (Scope 1 and 2 of our CO₂ balance).
In this way, we are helping to secure a future worth living for generations to come.

Sustainability
The integration of social, economic and environmental concerns plays a central role in our corporate policy. We pursue sustainable development that meets the needs of the present without compromising the ability of future generations to meet their own needs.
Good working conditions should not be a privilege, but a matter of course. We therefore commit ourselves and our suppliers to consistently comply with human rights and all legal requirements. A good and open working atmosphere is also essential. Our clear organisational structure also encourages our employees to make independent decisions and develop their skills. In this way – but also through our attractive training and development programmes – we strive to retain young colleagues and are already laying the (human) foundations for a successful future.
Diversity is an asset. That is why we are actively committed to a non-discriminatory working environment. All employees participate in the company’s success through a fixed distribution key.
We feel closely connected not only to our workforce, but also to the region. We therefore also fulfil our social responsibility through donations, the distribution of which is influenced by our employees.

