Japan holds very large market shares in high-technology industries such as electronics, industrial chemicals, machine tools, electronic media and (in recent years) aerospace. Construction has long been one of Japan's largest industries, with the help of multi-billion-dollar government contracts in the civil sector. These industries make Japan a major economic global power. Robotics constitutes a key long-term economic strength. There are very few, or if any countries in the world that matches Japan in production of high technology electronic products. The automobile/machinery and electronics industries are the largest and a major driving force within Japan's industrial sector.