Formosa Plastics Group is a titular Taiwanese conglomerate of diverse interests, including biotechnology, petrochemical processing and production of electronics components. The group was founded by Wang Yung-ching and his brother Wang Yung-tsai, and is chaired by Wong Wen-yuan. Despite its name, its holdings include several companies prominent in the high tech electronics sector, including VIA Technologies and Nanya Technology Corporation.

Wang Yung-tsai was the younger brother of Wang Yung-ching, founder of Formosa Plastics Group. He was born in Chyokutan, Shinden Town, Bunsan District, Taihoku Prefecture, Japanese Taiwan.