The term "rouge plant" refers to a type of manufacturing facility that specializes in producing red pigments for various applications. Some common synonyms for this term include red oxide plant, red pigment factory, red dye manufacturing plant, and red coloring facility. These facilities typically use iron oxide or other chemicals to produce red pigments that can be used in paint, plastic, cosmetics, and other products. Rouge plants are often located near sources of raw materials and have specialized equipment for processing and refining the pigments. While the term "rouge plant" may not be familiar to everyone, these facilities play an important role in the manufacturing industry.