Lenovo Group Ltd. /l?n'o?vo?/ is a Chinese multinational 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 2015, Lenovo was the worlds largest personal computer vendor by unit sales. It markets the ThinkPad line of notebook computers, IdeaPad line of notebook laptops, IdeaCentre line of desktops, Yoga line of notebook laptops, and the ThinkCentre line of desktops. Lenovo has operations in more than 60 countries and sells its products in around 160 countries. Lenovos principal facilities are in Beijing, Morrisville and Singapore, with research centers in Beijing, Morrisville, Shanghai, Shenzhen, Xiamen, Chengdu, Nanjing, and Wuhan in China, and Yamato in Kanagawa Prefecture, Japan. It operates a joint venture with EMC, LenovoEMC, which sells network-attached storage solutions. It also has a joint venture with NEC, Lenovo NEC Holdings, which produces personal computers for the Japanese market. Lenovo was founded in Beijing in 1984 as Legend and was incorporated in Hong Kong in 1988. Lenovo acquired IBMs personal computer business in 2005 and agreed to acquire its Intel-based server business in 2014. Lenovo entered the smartphone market in 2012 and as of 2014 is the largest vendor of smartphones in Mainland China. In January 2014, Lenovo agreed to acquire the mobile phone handset maker Motorola Mobility from Google, and in October 2014 the deal was finalized.