1. Connector: 59mm(2") for 1PC toilet
                         59mm(2") for 2PCS toilet
2. Fixed and adjustable overflow pipe for option,
    Fixed overflow pipe height: As request
3. Flush valve working height: 190mm, 250mm, 290mm for option
4. Adjustable partial and full flush can save more water as request
5. Various top push button for selection
6. Metal lock for one piece toilet