years' experience

Pioneers in high temperature insulation

At ISOLITE we’re constantly breaking new ground with our innovative, bespoke insulation concepts. We’ve been developing tailor-made, technically sophisticated high temperature insulation and sealing systems for the world’s leading industries for around 41 years.

So it’s no coincidence that ISOLITE is one of the world’s most sought-after partners, both at home and abroad. Because with decades of expertise under our belts we offer our customers a portfolio of thermal and acoustic insulation and sealing systems that’s second to none and that never compromises on quality.

Our constant product advancements, internal inspections and ongoing dialogue with our customers ensure our products are state-of-the-art – and stay that way. We offer the perfect systems for your needs in the 400°C to 1600°C temperature range.

Managing energy with ISOLITE.


Our team

ISOLITE has a team of 500 people who develop and produce innovative high temperature insulation systems at our twelve locations: Ludwigshafen (two locations), Worms, Nörten-Hardenberg and Neustadt an der Weinstraße in Germany, Greenville, SC and Wixom in the USA, Daegu in South Korea Port Elizabeth in South Africa (two locations), Sarajevo in Bosnia and Herzegovina and Almere in the Netherlands. Each one of our dedicated, customer-focused staff has the expertise and technical skills to ensure that all ISOLITE products are high-precision, long-lasting, and of the highest quality.

We’re fully aware that you can only expect top-class performance from a high-skilled, happy, and motivated team. So we make a point of actively involving all our employees in our development and growth processes right from the start. Our workforce development speaks for itself:

  • employees


The management team – with Satoshi Tsukahara, Hiroyuki Yamanaka and Yuji Matsuo, the ISOLITE group has experience and expertise in all areas.
The ISOLITE management represents the company internally and externally and confirms its position as technology leader for high temperature insulation. They are the
guiding force behind ISOLITE’s success, having built up a worldwide customer and partner network, constantly advancing and enhancing our products and leading our workforce
with their clear, inspirational management style.

Satoshi Tsukahara
Hiroyuki Yamanaka
Yuji Matsuo

Our history

The origins of ISOLITE GmbH date back as far as 1878, when chemical engineer Dr. Carl Grünzweig and businessman Paul Hartmann had a vision: to invent insulating materials, develop insulation products, and open up a whole new market with them. They wanted to make energy saving and efficiency improvement available to everyone. Together they founded ‘Fabrik chemisch-technischer Produkte von Grünzweig & Hartmann oHG’ in Ludwigshafen, Germany, a company that would grow into a successful global player over the next decades.

One hundred years later, in 1978, a team of experts in high temperature insulation was formed to better meet the specific needs of this sector. Demand grew so rapidly that the team of experts soon became a department, then a division, and then ultimately, in 1997, a separate company: G+H ISOLITE GmbH. This company rapidly went on to become a leading and flexible supplier of high temperature and high-tech insulation solutions. More and more manufacturers in the aerospace, automotive, mechanical engineering and turbine construction sectors came to value the expertise ISOLITE was able to deliver.

After the first management buy-out in 2006, automotive operations were placed under a new company, ISOLITE Automotive GmbH in 2007. Through another management buy-out in 2010, ISOLITE gained even more independence and established MINILEIT Inc. in 2012, to be able to represent North America and strengthen connections with our customers oversees. In August 2015, we entered into a joint venture with the Korean company MMT Automotive (Mirae Metal Technology) to open up the Asian market, mainly in Korea and Japan. In 2017 change of shareholder at ISOLITE: The listed Japanese company Hitachi Chemicals Co. Ltd. acquires HQ Equita shares. Building on the materials expertise of both companies, the group offers its customers complementary technology portfolios that present ample opportunities for joint developments.

In 2018, ISOLITE looked back on a 40-year success story. Over this time, the company based in Ludwigshafen am Rhein in Germany’s Rhineland-Palatinate has grown into an insulation specialist that operates across the globe.

The need for sophisticated insulation systems is constantly growing – and with it the ISOLITE Group.