Perimeter Solutions, SA manufactures and supplies firefighting products and lubricant additives in the United States, Germany, and internationally. It operates in two segments, Fire Safety and Oil Additives. The Fire Safety segment provides fire retardants and firefighting foams, as well as specialized equipment and services for federal, state, provincial, local/municipal, and commercial customers. The Oil Additives segment produces Phosphorus Pentasulfide which is primarily used in the preparation of lubricant additives, including a family of compounds called Zinc Dialkyldithiophosphates. The company offers its products under the brands PHOS-CHEK, FIRE-TROL, AUXQUIMIA, SOLBERG. and BIOGEMA. Perimeter Solutions, SA was founded in 1963 and is headquartered in Clayton, Missouri.