How much does it cost to apply sealant?

At present, the general market price is around 15-20 yuan square, and the price will be different in different places. The traditional sealant is coated on the surface of the sealant. The new caulking agent does not need caulking agent as the bottom layer, and can be directly added to the cracks of ceramic tiles after bonding. It is suitable for gap filling of more than 2mm, and the construction is more convenient than ordinary ones. It is an upgraded product of caulking agent.