When selecting bathroom accessories, they should be consistent with the overall design. 1. The surface of sanitary ware should be smooth, delicate, free of sand particles and bubbles, with elegant and exquisite shapes, fluent and simple lines, and vulgar colors that correspond with the color of the bathroom wall and floor tiles. Choose a brand according to your own economic ability that matches the overall decoration level of the residence. 2. In the three-piece set of sanitary ware, the materials for the washbasin and toilet are ceramic. The materials for the bathtub can be acrylic, steel plate, or cast iron, so it's important to ensure that the colors of the three pieces match as much as possible. Additionally, different brands may have different colors (color codes), so when mixing and matching, try to carefully select similar colors. 3. Acrylic is a new type of chemical material, and bathtubs made from exclusive acrylic panels are recommended. Acrylic bathtubs are lightweight, come in various colors and styles, have good heat retention, and are relatively expensive, but are quite popular both domestically and internationally; Steel plate bathtubs, on the other hand, are relatively cheaper with poor heat retention, and their lifespan depends on the thickness of the plate; Cast iron requires high investment, and many foreign brands adopt OEM processing and private label production. Due to weight issues during transportation and installation, compared to the above two materials, it has a smoother surface and finer density, making its lifespan relatively longer; Composite marble is a newly developed green product containing natural stone content, bright, wear-resistant, impact-resistant, and all three pieces of sanitary ware can be made from integrated materials, resulting in very harmonious colors. 4. The washbasin should correspond with the water faucet: single-hole washbasins use single-hole faucets, three-hole washbasins use single-handle double-hole faucets or double-handle faucets (foreign brands also call them separate three-hole faucets). If the drain pipe is on the wall, choose a P-trap; if the drain pipe is on the ground, choose an S-trap. 5. The distance from the center of the toilet discharge pipe to the wall is called the pit distance, and the pit distance of the toilet should correspond with the pit distance of the discharge pipe. Normally, buildings are designed with a 400mm pit distance, but some buildings may be designed by overseas designers or domestic designers doing detailed designs, adopting a 305mm pit distance (American standard), while the European standard is approximately 210mm. With the large presence of European products in the domestic market, new concepts brought back by people who travel abroad, and the promotion of foreign brands in the market, there are already concealed water tanks combined with wall-mounted toilets being used in residential properties.