SHENZHEN/SHANGHAI/TAIPEI/ -- In the first few weeks of 2019, 20 engineers from Huawei Technologies arrived in the riverside town of Jiangyin in eastern China on a secret mission. They took up stations at the state-backed Jiangsu Changjiang Electronics Technology, China's largest chip packaging and testing company, where they went to work upgrading the facilities and increasing the site's capacity, ahead of a production surge in the autumn.







