1, lift-type sewer: easy to water out, not dirty hands. Suitable for large hotels, office buildings.
2. Bounce water: Press water with your hand. Generally suitable for family washbasin. (The spool is easy to break)
3, pirated sewer: mechanical, long service life, more durable, many families choose this.
4, fixed the sewer: not sealed the water mouth, can always release. Toilet wash basin for public places.
