ABM commercially known as ABM industries incorporated, is one of the largest facility management service providers. The company specializes in offering building maintenance and construction services at considerable rate. The professionals offer multiple maintenance services within one contract. Building construction and maintenance services are being provided in national, regional and local areas. Building maintenance services being provided by the company include janitorial services, electrical testing, transportation and parking services, clinical engineering, mechanical and HVAC and other similar services. Record says that ABM is offering all these services since last 100 years approximately. ABM services are now also available in approximately 20 international locations.