UL美国保险商试验室成立于1894年，主要从事电气、电子设备、机械产品、灯具、建材、防火器材及化学品等公共安全方面的检验工作。
UL认证产品及认证标准
UL标志是美国以及北美地区公认的安全认证标志，贴有这种标志的产品，就等于获得了安全质量信誉卡，其信誉程度已被广大消费者所接受。UL 认证在美国属于非强制性认证，主要是产品安全性能方面的检测和认证，其认证范围不包含产品的 EMC（电磁兼容）特性。常见需要做UL认证的产品及标准如下：
UL20 通用快速开关 (General-Use Snap Switches)
UL45 便携式电动工具 (Portable electric tools )
UL94-12 设备和器具部件用塑料材料易燃性的试验 (Test for flammability of plastic materials for parts in devices and appliances )
UL153便携式电灯 (Portable electric luminaires )
UL197 商业电炊事设备 (Commercial electric cooking appliances )
UL207 含制冷剂的非电气部件及附件 (Refrigerant-containing components and accessories, nonelectrical )
UL224 挤压成型绝缘管 (Extruded insulating tubing )
UL244 设备的固态控制装置(Solid-state controls for appliances)
UL248-10 (Standard for Low-Voltage Fuses - Part 10: Class L Fuses,)
UL250 家用冰箱和冷冻柜 (Household refrigerators and freezers ) UL291-2000 自动对讲系统 (Automated teller systems )
UL298 便携式电子手提灯 (Portable electric hand lamps )
UL310 电气快速联接接头(Electrical quick-connect terminals)
UL399 饮用水冷却器 (Drinking-water coolers )
UL429 电动控制阀 (Electrically operated valves )
Subject U L 429A, “Outline of Investigation for Electrically Operated Valves for Fire Protection Service,”
UL444 通信电缆 (Communications cables )
UL458 陆上车辆和船用电源变换器及其系统 (Power converters/inverters and power converter/inverter systems for land vehicles and marine crafts )
UL471 商用制冷机和冷藏柜 (Commercial refrigerators and freezers )
UL474 减湿器 (Dehumidifiers )
UL484 房间空调器 (Room air conditioners )
UL486A 使用铜导体的电线连接器和焊片
UL486C 绞接接线器 (Splicing wire connectors )
UL486E 铝和/或铜导线用设备布线终端 (Equipment wiring terminals for use with aluminium and/or copper conductors )
UL489 模制断路器,模制开关器和断路器外壳 (Molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures )
UL489A 用于通信设备上的断路器
UL496 螺口灯座（爱迪生灯座） (Edison-base lampholders )
UL497A 通信电路的辅助保护装置 (Secondary protectors for communication circuits )
UL498连接插头和插座 (Attachment plugs and receptacles )
UL499 电加热装置 (Electric heating appliances )
UL507 电扇 (Electric fans )
UL746A 聚合材料.快速性能评定 (Polymeric materials - Short term property evaluations )
UL746C 电气设备评定用聚合材料 (Polymeric materials - Use in electrical equipment evaluations )
UL758 设备的布线材料 (Appliance wiring material )
UL817 电线集和电力供给电线 (Cord sets and power-supply cords )
