US Builders Review Case Study

While the company is new to the United States market, Groke / SOMMER USA Inc. (Groke) is having no issue making its mark. Groke manufacturers customized modern doors for high-end residential and light commercial applications in both new and retrofit construction, many of which exceed Energy Star 6.0 requirements. Initially a European-based company, Uwe Sommer and Gerd Schaaf founded the United States-based operation in North Carolina in 2007.

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