CHENNAI: Despite a sharp rise in raw material price, Exide Industries has reported a 51 per cent growth in its turnover at Rs. 848 crore in the three months ended June 30, 2007, against Rs. 563 crore in the year-ago period. The profit after tax rose sharply to Rs. 70 crore from Rs. 38 crore. The company derives 60 per cent of its business and profits from the auto industry.