Undercoating agent for automobiles CT-21

CT-21 is applied to and coats all metal surfaces of automobiles. It forms a film that totally blocks the penetration of water and oxygen to prevent rust. It also features excellent resistance to acids, alkalis, salt and corrosion for maximum protection of the auto body.

1. Based on a special formulation issued by DINOL of Sweden, CT-21's strong films are resistant to damaging chemicals and other metal-destroying agents.

2. CT-21 films are not broken even at low temperatures.

3. CT-21 powerfully and effectively protects a car's body from acid rain, acid snow, calcium chloride, and other metal-destroying chemicals.

4. CT-21 is a semi-permanent undercoating agent that features superior cold and corrosion resistance.

1. Prevents rust and corrosion on rocker plates, fenders, mudguards, hoods, footboards, and frames
2. Prevents damage to the car's underbody from road debris and rocks.
3. Suppresses noise from vibrations.
4. Reduces impact on welded parts.


1. Shake product sufficiently prior to use.
2. Clean and dry the part to be treated.
3. Spray evenly at a distance of approximately 20-30cm.
4. To clean the valve after use, hold the container upside down and press the button for 1~2 seconds. This removes residue from inside the valve and button and ensures normal function during the next operation.
5. If the spray doesn't work properly because of residue clogging the valve, remove the button and clean it in petroleum solvents and replace.