Andhra petro

Hi,

Sales increased by Rs. 50 Crore (YOY increase around 44 percent) and cost of material increased by just Rs.11 Crore (cost of material material is 63 percent of revenue for current quarter and 79 percent for last year (approx)).Hence, bumper profits. Is this kind of margins sustainable or one of due to higher realisation on account of higher crude prices and benefit of inventory?