Stabilo
The company that has a red circle logo with a red R in it is RadioShack.
Stabilo
target
Castelli
what company has the word open in red and 3 white circles and one red circle
Fiat
airwalk
Vodafone
Vodafone
The company with a red circle containing a "C" is the popular social media platform, YouTube. The logo features a red play button icon, but the "C" refers to the "C" in the company name "YouTube." However, if you're referring to a different context or company, please clarify for a more accurate answer.