Select the toilet's attention?

Select the toilet's attention?

1, color 2, quality 3, outlet 4, water-saving 5, matching

1. The size should be appropriate, the size of the outlet and the size of the home outlet. 2, to water-saving, toilet water is a big item, we must save water. 3. To suction, you can ask the owner to give you the island basin water try to suction