Tu’s New Beat

[John] Tu and his business partner at Kingston, David Sun, are longtime fixtures on the Business Journal’s OC 50 listing of the area’s most influential executives. Tu’s work to bring Fluxergy’s diagnostic system to the front lines of the COVID-19 crisis—along with other notable community-focused work during the pandemic, such as a $2.5 million gift this month to UCI Health—makes him one of just 20 repeat entries in this year’s edition …..