A well-known brand of waterproof coating is Aili, which is imported from the United States. It has no odor and can effectively remove odor when scrubbing in the bathroom. It is also antibacterial and mildew-proof, keeping the room bright and white for a long time. Because there are many water stains in the bathroom, the air is not well dredged and it is humid, you can make a protective layer of mortar waterproofing agent to increase the strength of the wall and improve the puncture resistance.