At present, there are many products in the coating market that have good heat resistance, but compared with silica sol inorganic coatings, their heat resistance is nothing compared to theirs. The heat resistance of inorganic coatings is unattainable by other products, and its heat resistance is due to the reaction of silica sol. Silica sol itself has excellent heat resistance. Adding this material to the coating greatly improves the heat resistance of the coating, making it suitable for places where heat-resistant products are needed to reduce the occurrence of fire.