Chettinad Cement's operating profit margin improved 520 basis points y-o-y to 38.1% in June 11 quarter, while its net sales increased 35.1% to Rs 472.4 crore. The company benefited from cement realisations, which improved nearly 39% y-o-y on a per tonne basis to Rs 4,536 per tonne, while dispatches grew 8.7%. Net profit also improved 247% y-oy during the review quarter.