Rheinische Baustoffwerke GmbH (RBS), mainly operating in the Rhenish lignite mining area, is among the largest sand and gravel producers. The company's strengths are its many different sites, which are well connected to the transport network in the area. This results in the company being able to supply its customers with large quantities of high-quality products. The delivery routes are short and high-volumes for large projects can be guaranteed. 

Over the last few years, the company has developed from a pure gravel and sand producer to a supplier of a wide range of building material and also manages building waste. The RBS plants have high production capacities. The company continuously works on improving the quality of its products. With its forward looking policy of acquiring the necessary sites in advance, RBS secures resource supply at its locations for the long term.