- Concept Headrest
- CloudCar
- CRUX Interfacing Solutions
- Cartesian Co
- CAD Supplies
- Click3D Printers
- Cherry Keyboards
- Clevetura
- CharaChorder
- CareOS
- CoolSeason
- Cable Showcase
- ChargeHub
- Craig Electronics
- Contemporary Research
- Chromo
- Cyndr
- Coax
- Cipher Labs
- Cansec
- CreateLED
- Chinmore
- Crystal Icing Select
- Cool Bananas
- Cool Cube Toys
- Corby
- Cool2Day
- Crux Bluetooth
- Crownea
- Crystal Case
- CS Brand
- Cosina
- Cord-Lox
- Cubeternet
- Creativity Street
- Cognitive
- Comtrol
- ColorMax
- Coleman Cable
- Connect It
- Cable And Case
- Case Bazaar
- CellCostumes
- Carnetix
- CarXtc
- CellMACS
- Cloud-IPC
- Cabledyne
- Channel Vision
- Cavalry
- Clay Vision
- Cozyswan
- Componexx
- Copartner
- Cabletron Systems
- Capelli New York
- Citi Electronic
- Cellular Specialties
- Checkers Industrial
- Clik Elite
- Ciesta
- Clearsnap
- Cable And Forge
- COP USA
- Cullmann
- Cyanics
- Connectronics
- Chaomin
- C.P.M. Camera Rig
- CE Labs
- Cinevate
- Citywireless CA
- Casual Arcade
- Cornet
- Clevo
- Cameras For All
- Compufox
- Conversions Technology
- CMS
- Champion Electronics