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Which major is popular in universities now?
Automobile facial make-up knowledge 1. What is professional car beauty? Automobile beauty is a brand-new concept, which is essentially different from general computer car washing and general waxing. Professional automobile beauty has its own systematicness, standardization and professionalism. The so-called systematization is aimed at the characteristics of the car, because of the comprehensive and meticulous maintenance from the outside to the inside; Standardization means that each working procedure has standard and standardized technical requirements; The so-called specialty means using professional tools, professional products and professional means, and operating in strict accordance with the process requirements. Car beauty should use professional and high-quality maintenance products, and carry out targeted maintenance, beauty and renovation of materials in various parts of the car. Make the appearance of the car after professional beauty clean as new, keep the paint bright for a long time, and effectively extend the life of the car. 2. Why should the car paint be waxed? Waxing the car is the basic means to protect the car paint. Waxing has the following two functions: 1. A protective film is formed on the surface of the car paint to effectively isolate the adverse effects of the external environment such as sunlight, acid rain, bird droppings, dust and industrial pollution on the car paint, and put on an invisible car coat for the car. 2. Improve the gloss of the paint surface and achieve the final mirror effect on the basis of polishing. 3. Why should the car paint be polished? Function: 1. Depending on the chemical reaction between polishing agent and car paint, car paint will show its own luster and achieve mirror effect. 2. Cure minor damage of car paint (if not grinding), including acid rain spots, alkaline water spots, lime cement spots, insects and birds, industrial pollution, etc. 3. Prepare to wax. 4. Eliminate tiny scratches (hairline scratches) caused by grinding. 4. Why should the paint surface be polished? Due to the impurities in sunlight (ultraviolet rays), rain and air, the oxide layer will gradually appear after the car paint is used for a period of time (about half a year). At first, it was invisible to the naked eye, but touching the car with your hands would have a bumpy feeling. If it is serious, the car will lose its luster, and waxing will not help. 5. Why should the car be maintained? The technological innovation of any car will gradually deteriorate with the increase of mileage, and the cooperation of all parts will inevitably appear different degrees of wear and looseness. The replacement of vehicle protective fluid is not complete, and there are problems such as carbon deposition and scaling in engine, power steering system and automatic transmission. If it is not protected and maintained in time, it will affect the normal work of the car, and may also cause excessive wear and tear of some parts and even lead to serious accidents. Therefore, it is necessary to maintain the vehicle regularly or by mileage according to scientific maintenance methods and technical specifications, so that all parts of the vehicle can always work well and reach the whole life. 6. What are the functions of car wax? 1, waterproof function. Cars are often exposed to the air, and it is inevitable that they will suffer from wind and rain. When water drops remain on the surface of the car body, when the weather turns fine, every water drop is a convex lens in the strong sunlight. Under the focusing action, the temperature at the focus reaches 800~ 1000oC, which leads to black spots on the paint surface, which greatly affects the quality problems and service life of the paint surface. In addition, water droplets can easily corrode exposed metal surfaces. Advanced car wax can reduce the adhesion of water droplets by more than 90%, thus greatly reducing the possibility of car body erosion and protecting the paint surface to the maximum extent. 2. High temperature resistance. The principle of high temperature resistance of car wax is to effectively reflect the incident light from different directions and prevent the incident light from aging and discoloring the top coat or primer.
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