Question 1: What should I do if I scratched after ceramic coating?
If you are using KISHO ceramic coating, then you just need to wipe it off. Because ceramic coating itself is scratch resistant and increases hardness. If it can't be wiped off, it means that the ceramic coating product you are using is inferior, or the staff cut corners during the ceramic coating.
There will be a transparent crystal formed by the ceramic coating product on the paint surface that has been ceramic coated. The shallow scratches only damage the crystal, and will not damage the car paint.
Question 2: Is it necessary to prevent scratches after ceramic coating?
After using KISHO ceramic coating, you are not afraid of minor scratches. The scratches are only on the crystal and will not damage the paint.