Sound barriers or noise barriers are often used along highways and railway lines. The Kenniscentrum Geluidsisolatie (KGI), houses a couple of international and national suppliers of noise barriers that offer a wide range of innovative products and materials. We take care of maintenance, delivery, repair and renovation for all forms of noise barriers. You can also contact us for information. KGI-Groep is your contact point. We guarantee KGI-quality.