Dieter E. Pfisterer

The Construction Specifications Institute, Inc. operates membership organization for understanding of construction risks. It specializes in education, certification (CDT, CCS, CCCA, CCPR), developing standards, formats (MasterFormat, UniFormat, OmniClass), networking for architects, specifiers and product representatives. The company was founded in March 1948 and is headquartered in Alexandria, VA.

National Roofing Contractors Association operates as a nonprofit association that represents all segments of the roofing industry, including contractors, manufacturers, distributors, architects, consultants, engineers, building owners and county, city and state government agencies. The company was founded in 1886 and is headquartered in Rosemont, IL.

Pfister Energy, Inc. engages in the provision of solar installations and renewable energy systems for commercial, industrial and institutional facilities. Its solutions include solar electric, wind turbines, daylighting, green roofs, solar thermal, fuel cells, solar lighting, and rainwater harvesting. The company was founded by Dieter E. Pfisterer and George Piasecki in 2005 and is headquartered in Hawthorne, NJ.