Lenovo's manufacturing operations are a departure from the usual industry practice of outsourcing to contract manufacturers. Lenovo instead focuses on vertical integration in order to avoid excessive reliance on original equipment manufacturers and to keep down costs. Speaking on this topic, Yang Yuanqing said, "Selling PCs is like selling fresh fruit. The speed of innovation is very fast, so you must know how to keep up with the pace, control inventory, to match supply with demand and handle very fast turnover." Lenovo benefited from its vertical integration after flooding affected hard-drive manufacturers in Thailand in 2011, as the company could continue manufacturing operations by shifting production towards products for which hard drives were still available.