Career
He was the Director-General of the National Security Bureau (NSB) of the Republic of China (Taiwan) (Republic of China) in 2009–2014. Huawei products ban
In end of October 2013, speaking at the Legislative Yuan, Tsai said that the NSB doesn"t support the Republic of China government agencies from using products from Mainland China-based Huawei. He added that the government should be more alert for the possibility of information leak to Mainland China via Huawei products.
