rOtring® is a a German technical writing an drawing instrument comapny founded in Hamberg, Germany. It was established in 1928 as Tintenkuli Handels GmbH. 

"Rot ring" directly translates to red ring- which is still placed around the barrel of their pens today. The comapny's name was changed to Rotring in the early 70s to match the trademark. 

rOtring®, innovators of technical pens, mechanical pencils and art and calligraphy instruments, is the brand used by people whole value the power of ideas and visions and who strive to give these the highest form of expression.

The brand's focus is precision and quality tools to express creativity in sketching, writing and drawing. rOtring® provides consumers- from industrial designers and architects to artists and students - with the best possible product solution for every situation. Every product bearing the red ring is a perfect marriage of ergonomics and design, enabling users to work with precision and bring visionary ideas to life.