Is a plumbing for bathing or showering purposes, usually installed in the home bathroom. Most modern bathtubs are made of Acrylic or fiberglass, and are also made of ceramic steel. In recent years, wooden bathtubs have also gradually become popular in mainland China and are mainly made of cedar wood in Sichuan Province. Therefore, Also known as cypress barrel. Old Western bathtubs are usually made of galvanized steel or iron. All along, most of the bathtubs are rectangular, in recent years due to the popularity of acrylic heating bath tub, began to appear a variety of different shapes of bathtub. Bathtub is the most common color white, there are other such as pink and other colors. Most baths have a water level at the bottom and an anti-diarrheal water level at the top. Some install the hose on the edge of the bathtub.