ThinkPad X series the presence of a 12.1-inch Thin-film transistor (TFT LCD) display. These design values – thin and light – continued to be a part of the ThinkPad X-series laptops even after the purchase of IBM’s Personal Computing Division by Lenovo. The first X Series ThinkPad released by Lenovo was the X41 in 2005. The ThinkPad X-series laptops from Lenovo were described by Trusted Reviews as combining an ultraportable's weight and form factor with a durable design. The X-series laptops include traditional ultraportables, as well as convertible tablet designs. According to Lenovo, the ThinkPad X-series laptops include low power processors, offer long
Lenovo reducing the number of KPIs from 150 to 5, offering intensive training to managers, and working to create a global Lenovo culture. Lenovo also doubled-down on vertical integration and manufacturing near target markets in order to cut costs at time when its competitors were making increased use of outsourcing off-shoring. By 2013, Lenovo ranked 20th on Gartner's list of top 50 supply chains, whereas in 2010 the company was unranked. In 2012, Lenovo partially moved production of its ThinkPad line of computers to Japan. ThinkPads will be produced by NEC in Yamagata Prefecture. Akaemi Watanabe, president of Lenovo Japan, said,