In business for more than 100 years, Shell is one of the leading oil companies. Based in Huntsville, Ala., it specializes in fuel service station facility. The service station features an array of amenities, including grocery store, center, car wash, restaurant and C-store, among others. The facility supplies fuel, diesel refilling, motor oils and lubricants service. Shell trades crude oil, petrochemicals and oil products. Additionally, the company offers liquefied natural gas carriers and oil tankers.