- Our business is based upon a personable and communicative service to achieve complete satisfaction from our customers. We have more than 15 years combined experience in UNIX, CAD/CAM and associated software, particularly with IBM/AIX equipment, but also SUN/Solaris, SGI/IRIX and HP-UX. With IBM and AIX, this started with the old RT/6150 workstation and AIX version 2, continuing through to the ...www.cadunits.co.uk