The ei letter oil centre is designed to provide rapid maintenance of the vehicle maintenance chain for vehicle fuel replacement maintenance. It can provide multi-faceted guidance to the union stores and provide millions of kilometres of unrepaired maintenance to the car-loved community. With the concept of "good faith, science and technology" in mind, the company has a large number of priority personnel, a strong technological capacity, a comprehensive quality management system, sophisticated equipment and improved/enhanced quality. The centre promotes the concept of "three-part, seven-score" and "three-system, seven-system" to replace the centre, and provides rapid maintenance of the designed vehicle maintenance chain for the vehicle. With the rapid growth of the automobile industry, the after-car maintenance market has evolved into a large chain of fuel-storage exchanges. Based on the average vehicle value of $150,000, the cost of purchasing a vehicle is as high as $300,000, calculated as 250,000 cars (small cars), plus an annual increase of 15 per cent, while the operation of the car maintenance and oil-for-cars centre accounts for about 30 per cent of the total post-car market share. The rapid growth of the automotive service industry has become inevitable and has been valued by a number of corporate groups with good market prospects。