Adopt 1280 ℃ high temperature porcelain, porcelain white, high density and low water absorption. The cover plate adopts ABS engineering cover plate, with impact resistance, no discoloration and aging. The siphon principle is used for flushing and the negative pressure is used to remove the dirt. The sewage pipe is 500mm above the national standard, which is easier to remove the dirt. 360 ° rotary type