វិញ្ញាបនបត្រអនុម័ត ul

Underwriters Laboratories (UL) is one of the oldest safety certification companies. They certify products, facilities, processes or systems against industry standards. In doing so, they have issued more than 20 different UL certifications for a wide range of categories. Do I need UL certification? It is not required by law to have a UL listed…