A continually increasing number of applications in industry and research are relying on vacuum technology. Thus widely differing requirements result regarding the vacuum generating systems. Based on the long-standing experience in the design and manufacture of vacuum pump systems, NSH offers standardized pump systems which will match most applications �¢?? the VR pump systems. Typical areas of application for SINO-NSH VR pump systems are industry, research and chemistry. Here the focus is on processes for metal production and processing, drying and degassing, thermal treatment, coating in the area of semiconductor manufacture as well as surface refinement. VR pump systems are also used as backing pump sets for high vacuum systems in combination with diffusion pumps, turbo molecular pumps .