UL certification, provided by UL Solutions, is a mark of safety, quality, and compliance, indicating a product has been tested and met applicable national or international standards for safety and performance. It includes various types, such as product, personnel, facility, process, and system certifications, and is the most recognized third-party safety certification in the U.S.. The certification process involves testing, inspection, and ongoing follow-up services to ensure continued compliance, offering benefits like mitigated risk, demonstrated compliance, and enhanced market credibility for manufacturers.