 HOUSTON--BUSINESS WIRE--DXP Enterprises, Inc. NASDAQ: DXPE is pleased to provide shareholders with a preannouncement of DXPs performance for the three months ended June 30, 2021, which features growth in sequential sales, improvement in gross margins and solid free cash flow generation. David R. Little, Chairman and CEO commented, Today, based on preliminary financial information, we are pleased to announce sequential sales growth in all three business segments for the second quarter of 2 