If it is only a small part of the damage, it can be repaired with some fire-retardant repair coatings, and the price is about 50~ 100 yuan. However, if the damaged area is large or deep, you need to use a more advanced fire retardant coating, the price is 200~300 yuan.
It should be noted that the repair of fireproof coating may not completely repair the damaged baking tray or gas stove, and the service life of the stove may be shortened after the repair of coating. Therefore, it is best to replace the baking tray or gas stove in time to ensure family safety.