schwing gmbh is a german manufacturer of mobile and stationary concrete pumps and truck mixers, headquartered in herne, as well as the parent company of schwing stetter in memmingen. the business group is the world's second largest concrete pump manufacturer, behind putzmeister, also a german manufacturer and subsidiary of the sany group. the company employs more than 3300 people worldwide in seven countries. in addition, there are individual distribution companies in more than 100 countries.