Based in the Platières industrial zone in Mornant, near its asphalt plant, MGB is a company specializing in road works for municipalities or departments 38-42-69.
Its activity is also developing on the construction of industrial platforms and car parks for commercial areas or businesses. Its equipment fleet and 15 teams allow them to carry out all types of road works.
Its facilities are grouped together on a 4 hectare site in Mornant. MGB combines independence, performance and speed of travel due to its proximity to several major roads such as the A7, A6, A47, A450.

MGB works closely with its EOL asphalt plant and the CCC material recycling centers.