IGPL has good CAGR but it was because of fall in oil price which led to increase in margin ,Its largest and lowest cost producer of PAN in India & and only MAN manufacturer in India .
Here are pictures of slides in the ppt
the company also makes full use of byproducts made while manufacturing PAN by making benzoic acid & MAN of it
the company is also planning to CAPEX
the only thing left keeping company behind is margins