Royal Dutch Oil Company was founded in 1890, and was specially authorized by beatrix wilhelmina armgard, so it was named Royal Dutch Oil Company. In order to compete with American Standard Oil Company, the largest oil company at that time, Royal Dutch Oil Company merged with British Shell Transportation Trading Company in 1907 to form Royal Dutch Shell Group. The company has two headquarters holding system, with Dutch capital accounting for 60% and Britain accounting for 40%. The two headquarters are located in Rotterdam, the Netherlands and London, England. The group company has 14 branches, which are engaged in petroleum, natural gas, chemical products, non-ferrous metals, coal and so on. Among them, the production and sales volume of petroleum and petrochemical fuels ranks second in the world.