PLEIGER founded in 1925 by Paul Pleiger, the former Paul Pleiger Maschinenfabrik initially manufactured compressed air valves and fittings for the mining sector, and a few years later they also began manufacturing pneumatic mining pumps. In the 1950s, the product range for the machine engineering sector expanded to include components for hydraulics (radial piston engines, swivel drives) and eventually centrifugal pumps for wastewater. At the same time, the company diversified its production of plastic products, adding cast elastomers and later thermoplastics. In the years that followed, the electrotechnology and laser optic divisions were founded. At the end of the 1990s, the existing divisions were split into independent companies, with PLEIGER Maschinenbau among them. The development of new markets, the introduction of new products and expansion overseas led to significant growth, with four sites in Germany and manufacturing facilities in the USA, China and Korea.