U/L (Underwriters'Laboratories, Inc.)
Underwriters Laboratories, Inc conducts tests for safety and classification on wiring,electrical appliances, classified building materials (blown-in insulation, plywood, etc.) and provides a U/L seal which guarantees the safety of that product. Complaints about the safety of a product with a U/L seal should go first to the manufacturer of the product and then to Underwriters Laboratories, Inc.
Underwriters Laboratories, Inc. http://ul.com/aboutul/locations/
Underwriters Laboratories, Inc. Corporate HQ 333 Pfingsten Road Northbrook, IL 60062-2096 U.S.A Customer Service: 877.UL.HELPS (877.854.3577) Email: email@example.com (847) 272-8800