Lenovo Group Ltd. is a Chinese multinational computer technology company with headquarters in Beijing, China, and Morrisville, North Carolina, United States. It designs, develops, manufactures and sells personal computers, tablet computers, smartphones, workstations, servers, electronic storage devices, IT management software and smart televisions. In 2014, Lenovo was the world's largest personal computer vendor by unit sales. It markets the ThinkPad line of notebook computers and the ThinkCentre line of desktops.