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construction of structures in the nature of museum exhibits, permanent retail and corporate environments, temporary environments for meetings and receptions, stage sets for theatrical enterprises and stage sets for meetings and conferences and trade show booths, including the installation of associated lighting and audio systems, all designed to evoke or reinforce a particular message and theme or concept

design of museum exhibits, permanent retail and corporate environments, temporary environments for meetings and receptions, stage sets and lighting and audio systems for meetings and conferences and trade show booths, designed to evoke or reinforce a particular message and theme or concept