*Just easy touch can make dual flush work ,water saving. *Easy to install and easy to adjust the water volume and water level as your requests. *Effective shut-off system and quiet refilling water. *The height and the water level can be easy to adjusted , suitable for any sized of the toilet tank and both suitable for 1-pc toilet and 2-pc toilet . *Effective flushing work,and effective shut-off system without any leakage. *Silicon seal-water washer,anti-erosion,long duration, and non-leakage. For more information please kindly contact me directly.We are sincerely hope can establish long-tern busines relationship with you.We shall supply you and your company our best service.