Includes firms engaged in the technical inspection to disclose effects in different installations, including all kinds of buildings, the civil constructions of the infrastructure such as bridges, roads, tunnels, dams, railways, industrial facilities and equipment such as power plants, water desalination and sewage plants, petrochemical laboratories, defects in the engines of ships, aircrafts and locomotives, it also involves the nondestructive technical inspection, the analysis of the result and preparation of studies and reports that show the status of cases and treatment programs.