Fish and seafood HS code mapping

Automobile engine coolant is Fish and seafood HS code mappingone of the indispensable liquids in modern automobile cooling systems. When driving a car, the engine generates a lot of heat, and the temperature range for the car engine to work normally is usually between 90℃-105℃.Excessive engine temperature will affect engine performance and may cause malfunctions. Therefore, in automotive engineering design, an efficient cooling system is needed to maintain the engine temperature within an appropriate range. And a key part of the cooling system is the coolant. The function of coolant. The main function of automobile engine coolant is to cool the engine to keep it running within the appropriate temperature range. When the cooling system is working, the coolant flows through the engine body through the pump of the engine, and then through the radiator of the engine shell. Through heat exchange with the air in the environment, the heat generated inside the engine is taken away, so that the temperature of the engine is kept within the appropriate range. In addition to cooling the engine, the coolant also has the effect of anti-rust and anti-corrosion. Because various chemical components and metal parts in the car coolant will react chemically, resulting in precipitation and rust.Therefore, chemical additives are usually added to the coolant to keep the cooling system functional and anti-corrosion and rust-resistant. The classification of coolant is mainly divided into inorganic coolant and organic coolant. Most of the early coolants were inorganic compounds, such as carbonates, sulfates and nitrates, which have good rust resistance and cooling properties. However, this coolant has a certain impact on the environment and human health, so it is gradually replaced by organic coolant. The main components of organic coolant are ethylene glycol and propylene glycol. This ingredient has good high temperature resistance and rust resistance, which is suitable for the high-temperature and high-pressure working environment of modern engines. Compared with inorganic coolant, organic coolant will not cause obvious harm to the environment and human body, and is easier to recycle and process. Issues to pay attention to when using car coolant, you need to pay attention to the following issues: 1.Manufacturer's requirements: The coolant used by different brands or models of cars may be different, so it is necessary to determine the coolant suitable for your vehicle according to the manufacturer's requirements. Two. Replacement cycle: In general, the replacement cycle of automobile coolant is 2 years or 40,000 kilometers. If the owner travels more mileage during this period, it should be replaced in advance. 3. Coolant antifreeze: Car owners driving in cold areas need to pay attention that antifreeze coolant should be used to prevent freezing in winter. Four. Regular inspection: From time to time, the coolant needs to be checked to ensure its cooling effect and anti-rust and anti-corrosion performance. If the coolant is abnormal, it needs to be replaced in time. In a word, automobile engine coolant plays a very important role in the automobile cooling system. The correct use, replacement and maintenance of car coolant is necessary to keep the engine running smoothly within the appropriate temperature range.

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