From Halopedia, the Halo wiki
Cimaroon was a business company. It had what appeared to be a headquarters building located in a dilapidated low rise along Liberty Street of Old Mombasa, Earth. The building was apparently undamaged during fighting between UNSC and Covenant forces during the Battle of Earth in 2552
Cimaroon's products were available at Oh2-Hnzu stores in Old Mombasa, however it is unknown what the products were.
The Cimaroon building.
Ads for an Oh2-Hnzu store on Liberty Street, including Cimaroon.