In order to compete with Standard Oil, the largest oil company at the time, Royal Dutch Petroleum merged with British Shell in 1907 to form the Royal Dutch Shell Group, becoming one of the world's largest oil companies, the world's largest private natural gas producer and trader, an international pioneer in LNG technology, and the world's largest retailer of automotive fuels and lubricants. In 2016, Shell was ranked fifth in the world's top 500 by Fortune magazine, and its engine oil not only has first-class quality, but also does a very good job in marketing, ranking first in engine oil sales in the world and ranking first in the market layout in the world. In China, it is also the engine oil seller with the largest number of offline sales outlets and cooperative maintenance points, as well as the most complete service. As the world's third largest oil company, Shell controls the production and supply of base oil raw materials, and together with ExxonMobil, it owns the world's second largest additives company, Infineum, with the whole industry chain of engine oil production, with 3 production bases and 8 blending plants in China, and the production strength is quite impressive. In addition, Shell has passed the API and other authoritative professional certifications, and is also the supplier of internationally recommended oil products of the BMW Group. The domestic price of Shell Extreme Clean Helix is 689 yuan for 4 liters, and the mileage of oil change is 10,000 kilometers, but there are many fakes in China, so it is also recommended to buy it at the official designated sales point.