From a passionate mechanical engineer with a love for cars, Nguyen Ba Thai ventured into an unconventional startup path: producing exhaust treatment fluids for diesel engines—a field entirely new to Vietnam at the time. Nearly a decade after mortgaging his assets and selling his car to establish the factory, Madin now boasts over 700 sales points, exports to five continents, and operates with a tech-driven mindset. For this 9X CEO, the journey has always been about one core value: doing it right.