Gentex second quarter net sales increased 2.40% to US$286.97m compared to $280.26m in the second quarter of 2012; while its half yearly sales fell 2.54% year over year to $556.47m from $570.96m. The company's income from operations for the quarter reflected an increase of 24.5% to $71.6m from $57.51m, meanwhile its income from operations for the first half increased 10.11% to $135.4m from $123.01m.