The company's principal activity is to manufacture specialized products for industrial, recreation, agriculture and military/aerospace markets. the company operates in four business segments: electronic systems, flow controls, engineered films and aerostar. the electronics systems segment provides a variety of assemblies and controls to the u.s. department of defense and other defense contractors. flow control segment manufactures devices for precision farming applications and turf chemical spraying. the products of engineered films segment include rugged reinforced plastic sheeting for industrial, construction and agricultural application. aerostar segment produces and sells custom-shaped advertising inflatables that have a number of uses including parade floats and advertising media. engineered film revenues accounted for 34% of 2001 revenues; Electronic systems, 27%; Flow controls, 20%; Aerostar, 14% and businesses sold and for sale, 5%.