About Us

Siliciumbearbeitung Andrea Holm GmbH was founded 25 years ago and became an important and reliable vendor and partner for many companies of the semiconductor, solar, sputter and optical industry as well as famous Institutes and Universities. Until now we became a leading manufacturer of silicon and similar ceramic products.

Our aim is to realize our costumer needs to improve their competiveness in a fast changing world market. It is self-evident to us to continuously improve our processes to state-of-art technology and train skills of our employees to provide best possible quality, cost effective solutions and reliable lead times. Therefore we work strictly according to DIN-ISO 9001:2015.

Starting from project discussions to solution finding, from manufacturing of prototypes to serial production we are able to create best solutions within a short time due to the flexibility of our employees and technology. Due to many years of experience and continuously improvement of our production, processes and skills of our employees we are able to meet our costumer’s expectations.


Siliciumbearbeitung Andrea Holm Gmbh was founded in 1987 by Dr. Claus Holm. He was involved with silicon already during his studies at the University of Munich.  After leaving university with the Doctor degree in Chemistry he was working for Wacker a global leading silicon producer.After starting his own business the main interest was mechanical and chemical production processes for silicon, quartz and ceramics.

A few historical mile stones:

  • 1987 – Foundation of the company
  • 1990 – Production start at Gigerenz (todays production site)
  • Several production capacities adjustments: 1993 / 1998 / 2000 / 2008 up to more than 2000 m²
  • Sons join the company: Hans Holm 1999 and Florian Holm 2004
  • DIN-ISO 9001:2008 certifiedsince 2005
  • DIN-ISO 9001:2015 certifiedsince 2018

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Our aim is to provide best quality products and solutions to our costumer to improve their success in a fast changing world. Therefore we follow certain values:

  1. Our employees are our biggest strength. Their motivation and continuously qualification is the reason for our innovation and constant improvement
  2. Our customers are the reason of our existence. Therefore they are the central reason of our efforts.
  3. Our competitors are the incentive to become better.
  4. Our technology and flexibility are our capital.
  5. Our environment is the reason for our living.
  6. Our management is target-oriented and stands for flexible and fast decisions.
  7. Our vendors are part of our success.

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