Diamond Triumph Auto Glass, Inc. announced today that net sales for the quarter ended March 31, 2000 increased $3.3 million, or 8.0%, to $44.7 million as compared to $41.4 million for the quarter ended March 31, 1999. EBITDA for the first quarter of 2000 increased by $0.1 million, or 1.9%, to $5.5 million from $5.4 million for 1999.