About CSSIProviding Advanced Fire and Ballistic Protection for Real-World Demands

Founded in 2001 by Dr. Clem Hiel and Hilde Hiel, CSSI has pioneered the development of cutting-edge composite wall systems designed for durability, versatility, and superior performance across diverse environments.

Dr. Clem Hiel has a distinguished career in composite materials, including over 12 years at NASA-Ames Research Center, where he served as a Principal Investigator in the composite materials research program.

In 2008, CSSI was honored with the American Society of Civil Engineers (ASCE) Charles Pankow Award for Innovation for our Lightweight Modular Composite Firewall Systems.

Our U.S. facility provides end-to-end capabilities—from engineering and design to manufacturing and testing—supported by sales and installation services.

Today, CSSI continues to push boundaries in asset protection by developing both standard and custom-engineered composite solutions. Our collaborative approach with customers, technical expertise, and commitment to innovation make us a trusted partner in delivering high-performance composite technologies.

CSSI is proudly women-owned.