Vitreous

Vitreous, also known as Vitreous Glass Masters, is a company featured in Grand Theft Auto V and Grand Theft Auto Online.

Description
The company is likely specialized in container glass products. It owns a large processing unit, located at the intersection of Orchardville Avenue and El Rancho Boulevard in Cypress Flats, Los Santos, named "Los Santos Plant #1".

They also manufacture parts for AC units which can be seen on top of several rooftops in Los Santos including their own building in Cypress Flats. Inside the Los Santos County Coroner Office during the Dead Man Walking mission, there can be seen Vitreous branded pharmaceutical bottles.

Its slogan is "Real glass men with union pride". Workers of the company can be frequently seen outside the factory during daytime.

Influence
Vitreous is probably based on Owens-Illinois, a public company that specializes in glass products. The processing building in Cypress Flats is also modeled after the Owens-Illinois plant located on 2901 Fruitland Avenue in Vernon, California.

Their logo is similar to Victor Mouse Traps.

Trivia

 * "Vitreous" is an adjective meaning "glassy", alluding to the company's likely specialty of manufacturing glass products.