ZEELAND, MI (WHTC) - Gentex officials announced this morning a 15 percent increase in net sales to over 280 million dollars for the second quarter of 2012, as compared to the same three months of last year, with net income up six percent to almost 41 million. Earnings per diluted share stood at 28 cents. However, the gross profit margin fell from 34.7 percent to 33.1 percent, something that the company will work on, according to CEO Fred Bauer. The forecast for the third quarter at Gentex is a little clouded due to increased volatility in customer orders.