Automobile and marine industry Cleaning door skins, roofs, compartments, car bottom oil stains, etc. without water stains, will not cause water pollution; car carburetor cleaning and car surface paint removal, etc.; remove engine carbon deposits. If carbon deposits are treated, the treatment time with chemical agents is long, at least 48 hours, and the agents are harmful to the human body. Dry ice cleaning can completely solve the carbon deposition problem within 10 minutes, which saves time and reduces costs, and the descaling rate reaches 100%. Ship shell; seawater suction valve; seawater condenser and heat exchanger; machine room, machinery and electrical equipment, etc., which are cleaner than general high-pressure water jet cleaning.