During January-March quarter, cement companies in India have reported healthy operating profit margins compared with a year-ago period on the back of better realisation and volume growth.UltraTech Cement, the country’s largest cement producer, reported 24.5 per cent EBITDA (earnings before interest, taxes, depreciation and amortisation) margin in the quarter compared with 23.9 per cent a year ago and Ambuja Cement reported 29 per cent operating margin compared to 28 per cent a year ago. JK Lakshmi Cement has reported 21 per cent operating margin compared to 19 per cent a year ago.UltraTech’s realisation was higher by 8.7 per cent from a year ago to Rs 4,060 per tonne. Ambuja Cement’s realisation for the quarter was up 8.8 per cent from a year ago to Rs 4,260 per tonne. JK Lakshmi Cement’s realisation for January-March increased 12.7 per cent from a year ago to Rs 3717 per tonne.