Hans-Martin Buhlmann

Sero Entsorgung AG engages in the collection, and transportation of scrap and waste products from private households, commercial and industrial clients. The firms operations and those of its subsidiaries were sold to CLEANAWAY Nord-Ost GmbH, in 2002. The company was founded in 1991 and is headquartered in Berlin, Germany.

ProVita Alltagsassistenz Deutschland GmbH specializes in providing emergency call systems, daily care for seniors, and application services. ProVita Alltagsassistenz Deutschland is based in Koeln, DE, and has subsidiaries in Germany. The German company's products include mobile emergency calls and GPS tracking for quick and accurate location. The private company offers home emergency call services for individuals who live alone and have limited mobility. The CEO of the company is Hans-Martin Buhlmann.