If the repair shop in Changchun is looking for dry ice cleaning, it still has to be those with higher grades. Carbon removal from dry ice mainly depends on machines. Ordinary small repair shops can't do routine maintenance, so there is generally no such thing. Advantages of dry ice cleaning carbon deposit: fast time, no pollution, no damage to equipment, and the cleaning rate of carbon deposit reaches 100%. The formation of automobile carbon deposit is irreversible. In short, as long as the engine oil is burned, there will be carbon deposition, without exception. The appearance and accumulation of carbon deposit is not a good thing for vehicles, which affects fuel consumption, power and jitter. , on the impact of engine life (piston, piston ring, cylinder knock, etc. ) and riding safety.