1. When purchasing, you should choose the overall glazed color of the toilet is bright, smooth, no foaming, no flaws. The product trademark is clear, with inspection certificate, instruction manual and random spare parts.

2. Click the toilet, it should make a clear and pleasant sound. The flushing device should be retractable and free of noise.

3. It is recommended to select various button switches on the toilet body and the panel for flexible operation and reliable contact. The clearance between the moving parts and the surrounding fixed parts is uniform. The glazed corners of the inner wall of the sewage pipe should be uniform and smooth.

4. The purchase should be made according to the actual distance of home installation.

5. Consumers can check the water efficiency label when purchasing. The national standard GB 38448-2019 "Limited Values and Grades of Energy Efficiency and Water Efficiency for Smart Toilets" stipulates that the water efficiency grades of toilets are divided into 3 grades, of which grade 3 has the worst water-saving and energy-saving effect, and grade 1 has the best water-saving and energy-saving effect.