The bathtub is a plumbing device for bathing or showering, usually in a home bathroom. Most modern bathtubs are made of acrylic (acrylic) or fiberglass. They are also made of ceramic-coated steel. In recent years, wooden bathtubs have gradually become popular in mainland China, mainly based on cedar in Sichuan. Also called Baichuan wooden barrel.
Older Western bathtubs are usually made of galvanized steel or iron. Most of the bathtubs have always been rectangular, and in recent years, the bathtubs of various shapes have begun to appear due to the increasing popularity of the acrylic heated bathtubs. The most common color of the bathtub is white, and there are other shades such as pink. Most of the bathtubs have a water level at the bottom, and there is also a water level at the top. Some install the hose at the edge of the bathtub.