D avid Sun is a Taiwanese-American billionaire who co-founded the memory and computer products manufacturer, Kingston Technology. He founded the company in 1987 with his business partner, John Tu, in response to a shortage of surface-mount memory chips. They bootstrapped the company from their garage and built it into the world's largest independent producer of DRAM memory modules.

Kingston Technology is famous for its unique and egalitarian corporate culture, with Sun and Tu treating their employees like family and sharing a significant portion of the company's profits with them. Despite its massive scale, the company remains privately held, with Sun and Tu as the majority owners. As the company's Chief Operating Officer, Sun has been the operational and engineering mind behind the company's success. He is known for his modest lifestyle and his deep aversion to debt, having run the company with a very conservative financial philosophy.