Underwriters Laboratories (UL) is a global independent safety science company with more than a century of expertise innovating safety solutions from the public adoption of electricity to new breakthroughs in sustainability, renewable energy and nanotechnology. Dedicated to promoting safe living and working environments, UL helps safeguard people, products and places in important ways, facilitating trade and providing peace of mind. UL evaluates more than 19,000 types of products, components, materials and systems annually with 21 billion UL Marks appearing on 72,000 manufacturers' products each year.

UL Standards development covers more than just products; it also includes standards for testing of systems and services. While UL is widely known for its work with safety standards, it develops a wide variety of standards to measure and validate performance, environmental health and sustainability.