UL is a global safety certification company headquartered in Northbrook, Illinois. It was founded in 1894 and has been providing safety testing, inspection, and certification services for over 125 years. UL operates in over 100 countries and has more than 14,000 employees worldwide. The company's mission is to promote safe living and working environments by advancing safety science. UL's services cover a wide range of industries, including consumer products, industrial equipment, building materials, and more.