American officials are concerned that Chinese technology at ports across the country could provide the communist nation insights about shipping traffic and national defense activities, according to a Sunday report from The Wall Street Journal.

Cranes and large steel structures manufactured by Shanghai Zhenhua Heavy Industries, also known as ZPMC, contain sensors that monitor the destination of shipping containers which move through American ports, the WSJ reported. Defense authorities have voiced concern that the Chinese-owned engineering company may be offering the Chinese Communist Party data regarding items shipped for the purpose of American military operations.