Heart Guardian™ by Radian QBio Company: Radian QBio Co., Ltd., founded in October 2005 in South Korea, specializing in sensors, medical devices, and testing systems. The company entered the medical space in 2014 and holds CE, ISO‑13485, and other certifications. Brand Identity: Heart Guardian™ is Radian’s AED line, positioning itself as a value-driven yet feature-rich defibrillator option, particularly in Europe, GCC, and Asia markets.