SED Systems Inc. (Popularity: )
http://www.sedsystems.ca/ Has experience in space, communications, satellite test and control, and custom electronic system manufacturing.
Space Island Group (Popularity: )
http://www.spaceislandgroup.com Developing a plan to design, build and operate commercial space transportation systems and destinations dedicated to commerce, research, satellite repair, ...
Syntonics (Popularity: )
http://www.SyntonicsCorp.com Provides custom and semi-custom time and frequency electronics for demanding space communications, precision navigation and science.
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