The well-known waterproof coating brand is Aili, which is an imported product from the United States. It has no odor and can effectively remove odors when applied in the bathroom. It is anti-bacterial and anti-mildew, keeping the interior bright and white for a long time. Because there are a lot of water stains in the bathroom and the air is not well ventilated and the bathroom is humid, a protective layer of mortar waterproofing agent can be made to increase the strength of the wall and improve puncture resistance.