Terrazzo (also known as millstone) is a product made by mixing aggregate such as crushed stone, glass and Shi Ying with cement binder, and then grinding and polishing. The terrazzo made of cement binder is called inorganic grindstone, and the terrazzo made of epoxy binder is also called epoxy grindstone or organic grindstone. According to the construction process, terrazzo is poured on site and the terrazzo floor is prefabricated.