Hiratsuka (2011b) illustrated that the Japanese affiliate assemblers operate in four ASEAN countries. Indonesia makes cylinder heads and blocks, engine valves, steering wheels, and transmissions. Malaysia makes instrument panels, bumpers, and drive shafts. Thailand produces frame panels, electronic parts, interior parts, and engine parts, while the Philippines produces engine fuel systems, engine electronics parts, suspension parts, and manual transmissions. However, the situation may change because the tsunami that hit Japan on 11 March 2011 disrupted the supply of electrical parts. Consequently, auto assembly lines in several countries, including Thailand, stopped. Japanese manufacturers are revising their business strategy to diversify the production of high-tech parts outside of Japan.