Guido Plassmeier

Solarparc GmbH engages in the planning, building, operation, and marketing of solar and wind power plants. It specializes in the technical and commercial operations management of renewable energy plants. The firm provides services such as monitoring, inspection, and maintenance of power plants, including project development and financing. The company was founded on April 15, 1993 and is headquartered in Bonn, Germany.

Deutsche Solar GmbH manufactures silicon wafers for the production of solar power and recycles used solar modules and cells. The company was founded in 2000 and is headquartered in Freiberg, Germany.

Vemag Verlags & Medien AG publishes books. The firm provide content on the subjects of cooking, learning, craft, fitness and many other guidebook topics. Its services include retailers, booktrade, international, print, digital and content. The company is headquartered in Cologne, Germany..