Marquis Commercial Solutions, Carmel, Indiana, has joined the National Service Alliance (NSA), a group purchasing organization for building service contractors. Marquis Commercial Solutions is locally owned and operates in Indianapolis. With more than 30 years of combined corporate work experience, the BSC brings a new perspective to the contract cleaning industry by offering a distinct competitive advantage as a best-cost provider. The focus on providing superior customer service has led to an aggressive growth of 400 percent for four years, as well as 100 percent client retention and contract renewal. The company provides janitorial services, carpet cleaning, window cleaning, final construction clean up, porter and matron services, floor care services, including floor stripping, refinishing and sealing, and green cleaning to meet LEED certification. NSA members benefit from the purchasing power of the group and enjoy national pricing on a wide variety of supplies and services.