The beginning of the amazing events at Krakatoa in 1883 date to May 20 when there were initial rumblings and venting from the volcano, which had been dormant for about 200 years.
A refinery margin is the revenue associated with refining petroleum, expressed as a value per volume (e.g. $/L), net of the cost of the crude oil input. The simplest refining
In other words, it directly impacts risk and return. Gross profit evaluation and gross profit optimization is necessary to calculate and understand gross profit percentage, commonly referred to as gross profit margin. Gross profit margin is a company's total sales revenue minus its direct costs, divided by the total sales revenue, expressed as a percentage. Gross profit margin represents the percent of total sales revenue that the company retains after incurring direct costs. The higher the percentage, the more the company retains on each dollar of sales to service its other costs and obligations.