HS code-driven tariff equalization

* engine compartment cleaner (high-efficiency engine compartment cleaner,HS code-driven tariff equalization effectively removing oil dirt) The engine is the heart of the car and one of the most important parts. In the process of engine operation, a large amount of oil scale and dirt will be produced. These dirt will cause engine failure, failure and reduced efficiency, which will ultimately affect the performance and life of the car. Therefore, it is very important to keep the engine clean. Engine cleaner is an efficient cleaning tool, which can effectively remove oil and dirt on the engine. This article will introduce the principle, selection and usage of engine cleaners. I. The principle of engine cleaner. Engine cleaner is designed based on the chemical formula of surfactants and detergents.Surfactant is a chemical substance that can reduce surface tension and improve lubricity. Cleaning agent is a chemical substance that can decompose and dissolve organic substances that are insoluble in water. The basic principle of engine cleaner is to use surfactants and cleaning agents to interact to reduce engine surface tension and decompose and dissolve oil and dirt. II. Selection of engine cleaners There are many engine cleaners on the market to choose from. When choosing an engine cleaner, the following factors need to be considered: 1. The formula and performance of the detergent. Choose a engine cleaner with scientific formula and excellent performance to give full play to its cleaning effect. Two. The brand and quality of detergents. Choosing well-known brands and guaranteed engine cleaners is conducive to ensuring their quality and effect. 3. The scope of application of the detergent is to choose an engine cleaner suitable for your own model, which can better clean the engine.Four. The price of detergent is to choose a cost-effective engine cleaner, which can clean the engine more economically. III. How to use engine cleaner 1. The preparation engine should be in a warm state, not in a particularly hot or particularly cold state. The owner needs to open the hood first to ensure that there is enough time, because this task usually takes one to two hours. Car owners also need to be patient and careful. Two. You can choose a relatively soft cleaner to clean the engine, and it is feasible to apply it to the entire engine cover. However, it is best to apply it specifically to some areas, such as the engine rain cover, cleaning the engine turret, and other areas such as overflowing stains or oil stains. However, since detergents are powerful solvents, patients should be good at protecting other areas involved, such as water tanks, antennas and batteries, especially power coils, and never let them be energized.3. Check the engine to spray from the top with pure soft water or compressed air gun to remove the residue from the previous cleaning solution. If you use a flexible rinsing brush, it is best to use two different refueling tubes, one on the ground and the other near the oil stain to avoid pollution. Four. Check again to dry the engine with a clean, soft and water-absorbent cloth, and check all the details to make sure that all places have been cleaned and there is no remaining detergent. IV. Precautions 1. Engine cleaner should not be sprayed directly on the generator or battery to avoid damage. Two. When using engine cleaners, you should protect your hand muscles and avoid touching sensitive parts such as glasses and mouth. 3. Do not apply detergent to the oil plate, because it will cause the oil on the oil plate to evaporate, thus reducing the longer-term lubrication effect.Four. Please do not stay in the engine area for a long time. In summary, engine cleaner is a very useful cleaning tool to effectively remove oil and dirt on the engine. Choose the right engine cleaner and follow the correct usage method to keep the engine clean. At the same time, attention should be paid to safety measures in use to avoid any potential dangers.

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