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National Service Alliance (NSA), Mooresville, North Carolina, added Advantage Maintenance, Inc., Woodbridge, Connecticut, to its roster. NSA is a group purchasing organization designed for building service contractors.

Advantage Maintenance Inc. began more than 30 years ago with a vision of providing the best janitorial services in Connecticut, while at the same time investing in its community, employees and company.

Clients include many property management companies as well as entertainment and arts venues, multi-tenant office buildings, major corporations, banks, financial institutions, medical facilities and schools. The company has expanded into New York, Rhode Island and Massachusetts through the requests and needs of its customers.

By joining a group purchasing organization, Advantage Maintenance Inc. can receive national pricing on products and services.