This is a Swiss imported brand that seems to have a history of 150 years this year and belongs to the ranks of high-end bathroom brands. They are considered the originators of concealed water tanks. Their water tank products come with a 50-year after-sales guarantee, so the quality is no problem. In addition, some other bathroom brands such as Duravit and Villeroy & Boch are also using their concealed water tanks, which shows that their products are also well recognized in the industry.