Birla Corporation’s premiumisation drive and focus on higher sales of blended cement helped the company post a steep 450 per cent year-on-year rise in its net profit at Rs 88 crore for the September quarter. Its revenue shot up 10.9 per cent to Rs 1,647 crore. In the year-ago quarter, the net profit and revenue stood at Rs 16 crore and Rs 1,485 crore respectively.