Mr Au established Tung Hing Plastics Manufacturing Company in 1977.  In 1987, Mr Au founded the Tung Hing Plastics Manufacturing Company in Shenzhen in 1987.  In 1983, he established the Yiu Tat Group in Zhejiang, specializing in property development and retail services.  In 2015, Mr Au’s business expanded to Bangladesh.

Mr Au has served in the Chinese People’s Political Consultative Conference of Taizhou in Zhejiang and in the Zhongshan city in Guangdong.